EP0872205A2 - Suction device attachment for wet cleaning surfaces for example - Google Patents

Abstract

The attachment (1) includes a suction channel (5), in which a valve (V) is arranged, which is triggered by humidity. The valve comprises a movable fastener body (18) which is forced indirectly through fluid parts carried in an air flow over a actuation element (26) into a blocked position. The actuation element is supplied through a fluid collecting body (F).

Description

The invention relates to a suction device attachment, for example. for wet cleaning of surfaces, with a suction channel, being in the suction channel a by exposure to moisture triggerable valve is arranged, the valve has a movable closure body.

Such a suction device attachment is, for example, from the DE-A1 19 61 137.1 discloses the attachment over which surfaces, For example, window panes can be cleaned with a damp cloth can. For this purpose, a cleaning liquid is used in one operation applied to the surface and this vacuumed with the dirt particles. The Dirty water is absorbed in a suction channel arranged tank collected. From a not previously published Patent application with the file number 196 54 335.5 is a safety device in the form of a Movable closure body known which the tank downstream the suction air flow when exceeded a predefined residual moisture within the suction air flow interrupts. The content of this patent application is hereby fully contained in the disclosure Invention included, also for the purpose Features of this patent application in claims of the present Include invention. In this patent application is a consisting of a movable closure body Valve described, which immediately by in parts of liquid entrained in an air flow in the closed position is movable, the movable Closure body flows against the fluid to be measured becomes.

In view of the state of the art described above becomes a technical problem of the invention therein seen a suction device attachment with one in the suction channel arranged, releasable by exposure to moisture Valve indicate which suction device attachment is due to a high level of functional reliability with regard to Distinguished valve actuation.

This problem is first and foremost with Subject of claim 1 solved, with reference to it is that the closure body through the in a Air flow with entrained liquid parts indirectly by means of a movement element moved thereby Shift to a closed position is controllable. The closure body is in accordance with the invention Condition of use in an equilibrium position, which allows passage of the suction air flow. From the Patent application mentioned at the beginning, not previously published it is known that once the normal inflow of the closure body a mass flow with increased Density is superimposed on the closure body by the additional impulse from its the valve opening position forming equilibrium position in a closed position is shifted. Here the mass flow exceeds a certain threshold value, the Lock body no longer in the equilibrium position stop and suddenly moves to the valve closure position, with which the closure body the volume flow interrupts. This makes clear switching points Are defined. According to the closure body not just directly through exposure to moisture but additionally indirectly through one, through in the Movable liquid parts entrained in the air flow Actuation element controllable. This loading element can, for example, the closure body in its basic position, i.e. in the valve open position, supporting element in the form of a pin or the like be. Once the loading element through the entrained liquid parts, this leads to disengage the closure body from the equilibrium position, after which the valve closure position abruptly is taken. The loading element accordingly acts mechanically on the closure body. It is also conceivable here, the loading element as a manually operated, manually operated element for the voluntary interruption of the suction air flow to train. However, an embodiment is preferred in which the loading element by a Liquid collection body is acted upon. This liquid collecting body takes them out in a known manner liquid separated from the air flow. Reaching one or exceeding a maximum fill level this actuates the loading element for relocation of the closure body in the valve closure position. As a result, the fill level of one of the Liquid collecting body receiving liquid container controlled. In the known prior art For this purpose, measuring methods are used, which optically via light barriers, via vibration behavior of transverse oscillators, thermal conductivity or capacitive the level by changing the dielectric check. However, this proves to be so disadvantageous that auxiliary energies e.g. for one Evaluation electronics are required. These point further known solutions have a position dependency on this relatively large installation space. According to the invention the control is independent of the position, this with clearly given Switching points of the valve. Is the maximum level not reached, the closure body remains in its basic position i.e. in the valve open position. When the maximum level is reached, the Closure body from the loading element moved to its equilibrium, to sudden Displacement of the closure body in the valve closure position. This configuration is also insensitive to contamination, this regardless of flow velocity and temperature. Continue drawing the configuration according to the invention by a simple, inexpensive construction with high functional reliability out. In an advantageous further development suggested that the liquid collection body a is swellable absorbent. Here, for example, a liquid-absorbing Sponge used, which one is compressed in the original, dry state and relaxes in the course of fluid intake and enlarged. The loading element is at a distance arranged and is to this liquid collection body through the decompressing absorbent body when reached a maximum level disengaged. Prefers becomes an arrangement in which the absorbent body a fleece cloth. It is also proposed that the absorbent body interspersed with an absorber material is. The latter can be used, for example, as a so-called superabsorbent, such as granules or fibers consist of a salt, zeolite or polyacrylate. The absorber material is characterized in that it in the dry state a granular or fibrous Bulk goods. When in contact with an aqueous solution the individual bulk grains swell many times over of their initial volume and take the Liquid on, for storing the same. In a Further development according to the invention provides that the liquid collecting body radially outside with respect to the Suction channel is arranged. One is preferred here Arrangement in the suction direction in front of the valve. The liquid collection body is penetrated by the suction channel. The absorbed liquid is in the liquid collecting body saved. The airflow will through the one that extends centrally through the collecting body Suction channel led. It is further suggested that the absorbent in the course of absorption of liquid an essentially axially directed expansion takes place. Alternatively, it can also be provided that that the absorbent in the course of absorption of liquid an essentially radially directed expansion takes place. However, configurations are also conceivable in which the absorbent body is both axially and extends radially. It is further proposed that the absorbent body is essentially perpendicular to it Expansion, individual layers. An embodiment is preferred here which the layers wrinkled, meandering with each other are connected. This can be achieved, for example be that the fleece in the axial direction to accordion-shaped Coils is unfolded. To this end the fleece can be cut and, if necessary, to increase the thickness increase, be pre-folded in several layers. In the exclusion the folded fleece in an annular piston press inserted and axially pressed. As already indicated it is provided that the liquid collecting body in In the course of its expansion, the actuating element is actuated. Here is a measure of the change in length of the absorbent body a function of the amount of fluid absorbed, the composition of the nonwoven material and its Geometry. In an advantageous development of the Subject of the invention is provided that a recording room circular for the liquid collection body is trained. This circularly formed recording space is preferably enforced centrally by the Suction channel. It is also provided that the liquid collecting body the recording space in the circumferential direction only partially filled. An embodiment is preferred here, in which the liquid collecting body has a circular segment-shaped plan. As a result of this configuration, the liquid collecting body can in the form of an absorbent body in addition to its axially directed expansion also over a expand even if small amount in a ring, until the formation of an almost closed circular Floor plan, to completely fill out the Recording room. The circular section-like plan can be horseshoe-shaped, for example. In a preferred embodiment provides that the A connection opening on the upstream side the suction channel. Through this connection opening parts of liquid separated from the suction air flow in the receiving space and thus to the liquid collecting body get to storage. Is preferred here an embodiment in which the connection opening is slit-like. For example, an annular slot may be provided. It is also conceivable here to form the connection opening in the form of a pressure grid. It also proves advantageous that the Suction channel forms a flow section, which from the receiving space for the liquid collecting body is surrounded. The suction channel is therefore divided into one formed in the flow direction in front of the receiving space Suction channel for the transport of gaseous and liquid Phase and a flow section for transport only the gaseous phase, the liquid Phase through the mentioned connection opening in the Recording space for storage in the liquid collecting body reached. For this purpose, it is further provided that the Connection opening assigned to an inner surface of the Suction channel wall is formed. It turns out as advantageous that in the direction of flow before the flow section a flow influence for phase separation is trained. By means of this flow influence the liquid phase becomes gaseous Phase separated, preferably by radial deflection the liquid phase towards the outside Connection opening to the recording room. Is preferred here an embodiment in which the throughflow section has a funnel section on the inlet side. This funnel section forms for influencing the flow For example, a ring cutter. To be even Moisture dampening of the liquid collecting body ensure, it is proposed that in the recording room for the liquid collection body in the longitudinal direction of the recording space running transport routes for the Liquid are formed. It is preferred that the transport routes essentially run as eels, in the inner surface of the outer wall of the receiving space molded for the liquid collection body Grooves are formed. These grooves promote moisture to the entire surface of the liquid collecting body. Only humidification on the front the liquid collecting body can during training as absorbent material interspersed with an absorber material cause a fluid barrier in the forehead area, with what a sufficient, even wetting of the liquid collecting body would no longer be guaranteed. The transport routes running in the recording room act counteract this disadvantageous effect. The liquid collection body will be even across its entire axial Length moistened. It is also conceivable here that channel-like grooves spiral in the inner surface of the Form the outer wall of the receiving space. Is further provided that the loading element in the flow direction is arranged at the end in the receiving space.

As a result, the loading element is in what Liquid entry area in the opposite receiving space End area arranged. By the described Invention a valve control is specified which is shifted by a passive element of the closure body without the use of external energy distinguished, this with a position-independent functional reliability. By using another, parallel to Acting element arranged support element can affect the responsiveness of the valve assembly be continuously adjustable. The whole The arrangement proves to be insensitive to flow because only one moving part is required, with a good one temporal response. The chosen arrangement is characterized by a high level of functional reliability and insensitivity to pollution and works independent of flow speed and temperature. In an alternative embodiment, the loading element also as a switch, for example in the form a microswitch to be designed for electronic Interruption of the suction air flow by switching off of the blower motor. It is also proposed that the loading element lever-like and in the end area of the receiving space is rotatably supported, with a receiving space leg and a valve leg, the receiving space leg from the absorbent body is acted upon. Stretches in the course of a liquid intake the absorbent body, so the thereby disengaged receiving space leg of the valve leg of the loading element via a rotary displacement so moved to the closure body that the latter shifted to the valve closure position becomes. Recording space legs and valve legs are preferably formed in one piece. In an advantageous Further development of the subject matter of the invention is provided that two valve legs are formed, wherein a first comes into effect when the absorbent is inserted and a second with the absorbent removed. Thus the closure body is triggered when no absorbent body is inserted or an inserted absorbent body has reached the maximum fill level. In both cases the closure body over one or the other valve leg from its valve opening position to the valve closing position relocated to interrupt the Suction air flow. It is also proposed that the two valve legs together about a right Include angles. By rotating the loading element due to, for example, maximum swelling of the suction body or when not in use The first or second valve leg acts on the absorbent body on the closure body for the same displacement. As it proves particularly advantageous here that the second valve leg in an approximately straight extension the Aufnahmeraumschenkel is formed. The two Valve leg and the receiving space leg are thus aligned in a roughly T-shape to each other, preferably in the transition area of the legs the pivot point of the loading element is formed is. In an advantageous development of the subject matter of the invention it is provided that the one operative position of the second valve arm by spring preload of the loading element in a basic position is reached. This basic position is preferably the Position in which no absorbent body is inserted. Due to the spring preload, the loading element due to the lack of support of the receiving space leg on the absorbent body, rotatably displaced, whereby the aligned in extension to the recording space leg second valve leg in the closure body the locking position shifted. On insertion a new, for example, compressed absorbent body Acting element again against the spring force in relocated an operating position in which the Breech body remains in a valve open position. When the absorbent body swells, the loading element becomes pivoted against the spring force, here the first valve leg for disengaging the Closure body comes into effect. This will continue suggested that the receiving space leg bevel has to guide the absorbent between the recording space leg and an inner wall of the Recording space when inserting the absorbent. This beveling of the receiving space leg causes the Resetting the loading element when inserting of the suction body in the operating position. It is provided that the receiving space leg in the active position of the first valve leg with an inner wall of the recording space a first acute setting angle includes. It is also provided that the receiving space leg in the active position of the second valve arm includes a second acute angle of attack, the opposite of the first acute angle is aligned. In an alternative Design is provided that the second valve leg on a separate, lever-like loading element is formed, both loading elements by a compression spring acting between you are connected. This is an alternative to single-lever training created two-lever training, the valve legs by separate loading elements are isolated. This is preferred an embodiment in which both loading elements both a valve leg and one Have recording space legs, with further preference is that the second Valve leg in a straight extension to it Recording space leg is formed and the first Valve leg of the other loading element whose recording space leg includes a right angle. In a further training it is proposed that the second loading element is rotatable in the end region of the recording room is stored. Is preferred here an arrangement in which the axes of rotation of the two loading elements essentially in one Level are arranged. Finally, it is provided that the compression spring between the respective receiving space legs the loading elements works.

The invention further relates to a liquid collecting body for a suction device attachment, e.g. for Wet cleaning of surfaces, especially for one Suction device attachment of the type in question. One such Liquid collection body is said to be preferred Embodiment can be formed as an exchange part. Around It is to offer a favorable exchange cycle here expedient that the liquid collecting body has a high Has liquid absorption capacity. This is provided according to the invention that the liquid collecting body is a swellable absorbent. Is preferred Here, an embodiment is selected in which the Absorbent body consists of a fleece cloth. Is further provided that the absorbent with an absorber material is enforced. The latter can be in the form of salts, Zeolites or polyacrylate can be formed for formation a superabsorbent in the form of granules or fibers. It is further preferred that the absorbent body in the course an absorption of liquid essentially one extends axially. Alternatively, you can radial expansion may also be provided. Continue a combination of axial and radial is also conceivable Expansion. It is proposed that the Absorbent body essentially perpendicular to it Expansion direction individual layers. It is preferred that the layers are wrinkled are interconnected. The liquid collecting body thus formed points in a preferred embodiment a circular section-shaped plan on. If fibers are used as the absorber material, see above these are preferred in the longitudinal direction of the absorbent body arranged. However, the fibers can also run transversely in the circumferential direction or run in a spiral. By the embodiments described is a separator cartridge given which is able to evolve during the Extend moisture absorption axially and / or radially. This separator cartridge is preferably made of a fleece cloth made with an absorber material is enforced. The latter is characterized by it from that it is a granular in the dry state Bulk goods. When in contact with an aqueous Solution swell the individual bulk grains on Multiples of your starting volume and take it up the liquid to store it. Of the The separator is preferably cylindrical or horseshoe-shaped cross section. In the axial direction the fleece is folded into accordion-shaped helices, why cut the fleece and, if necessary, to the To increase thickness, is pre-folded in several layers. In connection the folded fleece is preferably in a annular piston-shaped press and axially pressed. The Combination of swellable absorber material in combination with a fleece cloth proves to be advantageous. The absorption of liquid is due to the configuration of the liquid collecting body according to the invention, regardless of location. This with a high storage capacity. Becomes a fiber material instead of a granulate can be used by a preferred orientation the fibers have a similar effect.

Fig. 1

einen über einen Saugschlauch mit einem Staubsauggerät verbundenen Sauggerätevorsatz zur Feuchtreinigung von Flächen;

Fig. 2

in einer ersten Ausführungsform den Sauggerätevorsatz in einem axialen Längsschnitt, mit in diesem Vorsatz angeordnetem Flüssigkeitssammelkörper und Ventil, die Ventiloffenstellung betreffend;

Fig. 3

den Schnitt gemäß Linie III-III in Fig. 2 durch den Flüssigkeitssammelkörper und den diesen aufnehmenden Aufnahmeraum;

Fig. 4

den Schnitt gemäß der Linie IV-IV in Fig. 2 durch den Bereich des Ventils;

Fig. 5

eine der Fig. 2 entsprechende Darstellung jedoch in einer Ventilverschlußstellung aufgrund eines Überschreitens eines Massenstrom-Schwellwertes für einen Verschlußkörper des Ventils;

Fig. 6

eine der Fig. 5 entsprechende Ventilverschlußstellung, jedoch ausgelöst durch die Verlagerung eines Beaufschlagungselementes bedingt durch das Erreichen eines maximalen Füllstandes des Flüssigkeitssammelkörpers;

Fig. 7

der Flüssigkeitssammelkörper in einer perspektivischen Einzeldarstellung;

Fig. 8

in einer zweiten Ausführungsform eine Schnittdarstellung durch den Bereich von Flüssigkeitssammelkörper und Ventil, die Ventiloffenstellung betreffend;

Fig. 9

eine der Fig. 8 entsprechende Schnittdarstellung, jedoch in einer Ventilverschlußstellung, ausgelöst durch die Verlagerung eines Beaufschlagungselementes bedingt durch das Erreichen eines maximalen Füllstandes des Flüssigkeitssammelkörpers;

Fig. 10

eine der Fig. 9 entsprechende Schnittdarstellung, ebenfalls die Ventilverschlußstellung betreffend, jedoch ausgelöst durch ein Nichteinsetzen des Flüssigkeitssammelkörpers;

Fig. 11

eine der Fig. 8 entsprechende Schnittdarstellung, jedoch eine weitere Ausführungsform betreffend;

Fig. 12

eine der Fig. 9 entsprechende Schnittdarstellung, jedoch die Ausführungsform gemäß Fig. 11 betreffend;

Fig. 13

eine der Fig. 10 entsprechende Schnittdarstellung, ebenfalls die Ausführungsform gemäß der Fig. 11 betreffend.

The invention is further explained in more detail below with reference to the accompanying drawing, which, however, only shows several exemplary embodiments. Here shows:

Fig. 1

a suction device attachment connected via a suction hose to a vacuum cleaner for wet cleaning of surfaces;

Fig. 2

in a first embodiment, the suction device attachment in an axial longitudinal section, with the liquid collection body and valve arranged in this attachment, relating to the valve open position;

Fig. 3

the section along line III-III in Figure 2 by the liquid collecting body and the receiving space receiving it.

Fig. 4

the section along the line IV-IV in Figure 2 through the area of the valve.

Fig. 5

a representation corresponding to Figure 2, however, in a valve closure position due to exceeding a mass flow threshold value for a closure body of the valve;

Fig. 6

5 corresponding valve closure position, but triggered by the displacement of an application element due to the reaching of a maximum fill level of the liquid collection body;

Fig. 7

the liquid collection body in a perspective individual representation;

Fig. 8

in a second embodiment, a sectional view through the area of the liquid collecting body and the valve relating to the valve open position;

Fig. 9

8 shows a sectional view corresponding to FIG. 8, but in a valve closure position, triggered by the displacement of an actuating element due to the maximum filling level of the liquid collecting body being reached;

Fig. 10

9 shows a sectional view corresponding to FIG. 9, also relating to the valve closure position, but triggered by the liquid collector body not being inserted;

Fig. 11

8 a sectional view corresponding to FIG. 8, but relating to a further embodiment;

Fig. 12

9 shows a sectional view corresponding to FIG. 9, but relating to the embodiment according to FIG. 11;

Fig. 13

one of FIG. 10 corresponding sectional view, also relating to the embodiment of FIG. 11.

A suction device attachment 1 is shown and described with a liquid application device 2. The latter has a tank, not shown, for a Cleaning liquid. This measure can to a pressure supply line for the cleaning liquid be dispensed with by a suction device. This creates one of the basic requirements the suction device attachment 1 in connection with usual Use household vacuum cleaners.

The cleaning liquid is preferably applied via a row of bristles protruding into the tank. After exiting from between the individual bristles trained capillaries wet the cleaning liquid the back of one arranged over the rows of bristles Cleaning cloth 3. Viewed in the working direction a suction mouth 4 is arranged after this application area. The latter merges into a suction channel 5.

Between suction mouth 4 and that shown in Fig. 1 Vacuum cleaner 6 is provided phase separation device T, which is preferably designed in the form of a stator is. For this purpose, the not previously published Patent application with the file number 19 652 011 referenced. The content of this patent application is hereby incorporated fully in the disclosure of the present invention included, also for the purpose, characteristics of this Patent application in claims of the present invention to include. This calls over flow diversions Centrifugal forces arise, creating the liquid-air mixture into a liquid and a gaseous phase is separated. The resulting vortex formation the flow is in Figs. 2 and 5 through the Arrows a are shown.

A separator 7 is in the area of phase separation T downstream in the direction of flow, which separator 7 in the form of a funnel section 8 of a throughflow section 9 is formed. The latter is part of the Suction channel 5 for carrying out the gaseous phase and has a diameter of about a third corresponds to the original suction channel diameter.

The throughflow section 9 passes through one centrally receiving space 10. The latter is in the axial direction to one end through the the separator 7 forming funnel section 8 and elsewhere by a closed transverse wall 11 of the Suction device attachment 1.

On the upstream side, the receiving space 10 has a slot-like shape Connection opening 12 to the suction channel 5. This Connection opening 12 is formed in the radially outer Area of the funnel section 8, which in this Area with respect to the suction channel inner wall 15 is reduced in cross section is trained. This connection opening 12 can alternatively and in the form of a wire or Be plastic grid.

The receiving space takes a liquid collecting body F on. The latter consists of one with an absorber material, such as, for example, zeolites, salt or polyacrylate, swellable absorbent body 13, the absorbent body 13 preferably consists of a fleece cloth. The liquid collection body F has an annular section Floor plan corresponding to the cross section of the Recording space 10, wherein the liquid collection body F the receiving space 10 in the circumferential direction only partially fills in (see Fig. 3). Here is preferred chosen a horseshoe-like cross-sectional shape, whereby here also in cross section a closed hollow cylinder profile can be chosen. There is also the liquid collection body F, or the absorbent body 13 in essentially perpendicular to the longitudinal extent, layers connected to one another like folds absorber material located in the absorbent body 13 is characterized by the fact that it is dry is granular bulk material or alternatively from fibers consists. When in contact with an aqueous solution the individual bulk material grains or fibers swell multiples of their original volume, and take thereby through the connection opening 12 into the separation space or receiving space 10 entering liquid on and save it. The separator thus formed has a horseshoe-shaped or hollow cylindrical shape Cross-section. The fleece is closed in the axial direction accordion-shaped spirals unfolded. To this A fleece is cut to size and, if necessary, to the To increase thickness, prefolded in several layers. In connection the folded fleece becomes an annular piston Press placed and pressed axially. 2 and 5 is the liquid collecting body F in the unfilled, shown compressed state.

In this unfilled state, the liquid collecting body points F a measured in the axial direction Length l, which is about half the longitudinal extent of the receiving space 10 corresponds.

The receiving space 10 is in the flow direction Valve V downstream, the valve chamber 16 spatially to the receiving space 10 through the already mentioned transverse wall 11 is separated. The valve chamber 16 is in the Connection to the flow section 9, being in the transition area from flow section 9 to the valve chamber 16 a valve inlet opening 17 is formed. In terms of of the valve arrangement is based on the aforementioned unpublished patent application with the file number 196 54 335.5.

The valve V has a closure body 18 in the form a bullet. The latter is in the opposite Flow-through section 9 enlarged valve chamber 16 arranged to be movable in the axial direction. Continue are aligned in the valve chamber 16 in the axial direction, arranged on the inside and protruding inwards Ribs 19 provided to form a cage 20. In the exemplary embodiment shown are in accordance with the cross-sectional representation 4 four radially arranged Ribs 19 are provided, one, approximately the cross section of the rotationally symmetrical closure body 18 leave adapted free space 21. Alternatively, here also a rotationally symmetrical closure body for Which is managed centrally.

The valve inlet opening 17 is coaxial in the opposite End region of the valve chamber 16 has a valve outlet opening 22 with a frustoconical valve seat arranged. The valve outlet opening closes in the axial direction 22 a further suction channel section 23, which directly, possibly with the interposition of a Suction hose 24 or the like is connected with the motor-blower unit of the vacuum cleaner 6.

The diameter of the spherical closure body 18 is chosen so that it is larger than the diameter the valve inlet opening 17 and the valve outlet opening 22.

In the area of the valve inlet opening 17 is a Valve chamber 16 protruding parallel to the overall axis running and offset to this Stop mandrel 25 is provided. The latter is one in the the valve chamber 16 and the receiving space 10 for the Liquid collecting body F separating transverse wall 11 is supported. Relative to the floor plan of the transverse wall 11 this rigid stop mandrel 25 diametrically opposite another axially displaceable stop in Form assigned a loading element 26. The latter penetrates the transverse wall 11, so that a Section extends into the receiving space 10. Of the this section away from the end portion of the loading element 26 protrudes according to the stop 25, in the valve chamber 16.

The loading element 26 has for fixing one basic position corresponding to FIG. 2, based on the longitudinal extent arranged approximately in the middle Ring collar 27, which is shaped accordingly Pocket 28 of the transverse wall 11 is added. In this basic position, the loading element protrudes 26 with its valve-side end section accordingly the extension of the stop mandrel 25 into the valve chamber 16 in. The spherical closure body 18 relies on that caused by the loading element 26 and the striking points 29 formed by the stop pin 25 from.

The rotationally symmetrical closure body 18 is in the Operation of that through the suction channel 5 and after phase separation by the flow section 9 flowed suction air flow (arrow b). By the special design of the cross section of the valve chamber 16 is the flow around the closure body 18th designed so that the attacking axial forces this Lock body 18 in a state of equilibrium hold. The webs 19 also hold the closure body 18 on the central axis of the flow cross section. This state of equilibrium is in both areas regardless of the flow rate.

In order to ensure that valve V functions independently of the position, For example, when working overhead with the vacuum attachment 1, the closure body 18 by a supported helical compression spring 30. The latter sits on the end wall surrounding the valve outlet opening 22 the valve chamber 16 and carries the closure body at the end 18. The strength of the compression spring 30 is here chosen so that this is just sufficient to the Closure body 18 approximately in the basic position according to FIG. 2 hold.

5 is a closed position of the valve V shown. Here a mass flow overlaps with increased Density (arrow c) the normal inflow (arrow b). This additional impulse presses the closure body 18 from its equilibrium position shown in FIG. 2 towards the valve outlet opening 22. The closure body 18 gets into a non-equilibrium position and then suddenly moves into the valve closure position. The closure body closes in this 18 the valve outlet opening 22, which is an interruption of the suction air flow.

If the momentum from the mass flow (arrow c) is small, so the deflection is small and the closure body 18 remains in the vicinity of the starting position according to of Fig. 2. If the mass flow exceeds a certain Threshold value, for example, with a larger suction Amounts of water in which the separator 7 is the liquid Do not completely separate the phase from the suction air flow can continue and thus part of the liquid phase is passed through the flow section 9, so the closure body 18 is no longer in the equilibrium position hold and moves suddenly to the valve outlet opening designed as a check valve 22.

By means of the separator 7 through the connection opening 12 moisture conducted into the receiving space 10 is absorbed by the liquid collecting body F. To ensure that the liquid collection body is moistened evenly To guarantee F are in the Receiving space 10 transport paths running in the longitudinal direction trained for the liquid. These transportation routes are essentially as axial, in the Inner surface of the outer wall 31 of the receiving space 10 molded grooves 32 formed. The latter extend almost the entire length of the recording space 10. Alternatively, a spiral arrangement be provided by groove-like transport routes.

The formed grooves 32 promote moisture the entire lateral surface of the separating element trained liquid collection body F. Because this Liquid collecting body F is interspersed with a granular absorber material, which is reliable the liquid binds, one would only face Exposure to moisture causes swelling of the absorber material in the area of the end face do what one Liquid barrier would come close. The intended axial grooves 32 counteract this effect. In a further embodiment can be provided that the forehead and Inner surface of the liquid collecting body F wetted becomes. For this purpose, the suction body 13 from the flow section 9 separating wall, for example by a Lattice structure to be replaced or even eliminated.

The liquid phase passed into the receiving space 10 (Arrow d) is taken up by the liquid collecting body F, as a result of this recording, the absorbent body 13 expands. This expansion essentially takes place in the axial direction, a dimension L 'being reached, that in the embodiment shown about 1.25 times the original dimension L. Reached the liquid collecting body F has its maximum absorption capacity, shown in Fig. 6, so actuates the liquid collection body F the loading element 26, which is caused axially in the direction by this loading is shifted to the valve chamber 16. This shift has a disengagement of the closure body 19 from the Equilibrium position according to FIG. 2 result. Also here the closure body 18 moves after leaving the equilibrium suddenly in the valve closed position. The suction air flow is consequently also interrupted here.

The configuration according to the invention is a digital one Switching behavior of valve V is given.

The liquid collecting body shown in FIG. 7 in a single illustration F is designed as an exchange part. After reaching the maximum absorption capacity, which for the user in addition to an optical and / or acoustic signal by closing valve V is displayed, the liquid collection body is F against a new, compressed liquid collection body F to replace. This is the loading element 26 no longer supported, with which the closure body 18 automatically due to the spring preload the compression spring 30 back into the valve open position can shift back.

8 to 10 is in a further embodiment a valve control shown, in which triggering by radially controlled swelling of the Liquid collecting body F takes place. The liquid collecting body F-forming absorbent body 13 is here through a fleece with partially controllable, different Swelling behavior formed. This swelling behavior can be due to a different starting thickness, such as by means of pressing, pagination or through a water-soluble adhesive pressure can be achieved. Continue is a partially targeted orientation of the Source material conceivable, for example by means of fibers, superabsorbent or by weaving and knitting technology. Is too a partially increased concentration of the source material conceivable.

The absorbent body 13 is here end, i.e. the valve V facing in the not swollen basic state with a, compared to that formed in the interior of the absorbent body 13 Flow section 9 radially enlarged Active section 33 provided. This is a radial step 34 formed, the suction body end side in a Sloping edge 35 runs out.

Between the valve V or the valve chamber 16 and the Absorbent bodies 13 are two opposing loading elements 26 rotatable about respective axes 36 stored. Each loading element 36 sits down together from one acting on the closure body 18 Valve leg 37 or 38 and a receiving space leg 39.

The training is further chosen so that an application element 26 has a first valve arm 37, which to one, this loading element 26 associated receiving space leg 39 a right Includes angle. The second valve leg 38 of the other loading element 26 is approximately straighter Extension to the receiving space leg 39 formed.

The two receiving space legs 39 of the loading elements 26 are based on that shown in FIG Operating position at level 34 of the absorbent section 33 from. The by the compression spring 30 in the Valve body 18 held valve position supports on the valve legs 37 and 38.

The free end of the second valve leg 38 is opposite the free end of the first valve leg 37 tapers trained to form a displacement nose 40.

The two loading elements 26 are supported their recording space legs 39 spring-supported on the Stage 34 of the absorbent body 13, for which purpose between the two Receiving legs 39 a compression spring 41 is arranged is.

As in the previously described embodiment the closure body 18 in operation in a, as in Fig. 8 shown equilibrium position held. While the operation is directed into the receiving space 10 liquid phase taken up by the liquid collecting body F, as a result of this recording, the absorbent body 13 expands. This expansion takes place in this Embodiment essentially in the radial direction. As a result, the active section 33 also swells of the absorbent body 13 on what is at least a rotational displacement of having the first valve leg 37 Acting element 26 has the result (see Fig. 9), due to this rotary displacement moves first valve leg 37 from the closure body 18 (see dash-dotted representation in Fig. 9), with what the latter carried away by the current and suddenly is shifted into the valve closure position. Of the Suction air flow is therefore interrupted here.

8 to 10 a training is shown at which the second valve leg 38 is spring-supported supported on a valve chamber wall and consequently when the absorbent body 13 swells can be relocated. However, it is also an education conceivable, in which this loading element 26 in the course of the swelling of the absorbent body 13 is rotated, but in this situation without influencing the closure body 13.

Fig. 10 shows a situation when not in use Absorbent body 13. Here are the receiving space legs 39 of the two loading elements 26 due to the compression spring 41 arranged between them, since these receiving space legs 39 the support is missing. Here, the second valve leg 38 spring-supported, its nose 40 the closure body 18 disengages. The suction device attachment now put into operation, so the onset Suction air flow an automatic, sudden Displacement of the closure body 18 in the valve closure position. Here too, the suction air flow is interrupted. This ensures that the vacuum attachment not without an inserted, compressed liquid collection body F or suction body 13 put into operation can be.

In both active positions (Fig. 9 and 10) Recording space leg 39 of each on the closure body 18 acting loading element 26 a acute angle to the inner wall of the recording room 10 a, with a first acute setting angle Alpha between the receiving space leg 39 in the active position of the first valve arm 37 when reached the maximum fill level of the absorbent body 13 in opposite directions is directed to the second acute setting angle Beta between the receiving space leg 39 and the inner wall of the receiving space 10 in the operative position of the second valve leg 37 in the absence of Absorbent body 13.

The two receiving space legs 39 have in the area their free ends bevels 43, which at one Insert a new absorbent 13 with its Sloping edge 35 cooperate so that the absorbent 13 in the simplest way between the recording space legs 39 and the inner wall of the receiving space 10 introduced can be, while shifting the Acting elements 26 in the operating position according to Fig. 8.

11 to 13 show an alternative embodiment the previously described embodiment. Here is selected a single lever solution, with an actuating element 26 a receiving space leg 39 and two valve legs 38 and 39. Here is the second one Valve leg 38 also in a straight extension to the receiving space leg 39. The first Valve arm 38 closes to the second valve arm 37 a right angle.

This loading element 26 is also in the area between liquid collecting body F and valve chamber 16 rotatably supported via an axis 36. On axis 36 a torsion spring 42 is arranged, the legs of which are on the one hand on the receiving space leg 39 and on the other Support on the housing side. The direction of action of the torsion spring 42 is chosen so that the receiving space leg 39 against the step 34 of the absorbent active section 33 is charged.

According to the equilibrium position of the closure body 11 this is supported slightly by the compression spring 30 supports against the valve legs 37 and 38.

Swelling of the liquid collecting body F or Suction body 13 causes a rotational displacement of the loading element 26 against the force of the torsion spring 42. Here, the closure body 18 by the in at a right angle to the receiving space leg 39 aligned first valve leg 37 from its Equilibrium moved, after which by the suction air flow the closure body 18 abruptly into the valve closure position 12 is sucked. The suction air flow is therefore interrupted.

Is not a liquid collecting body F in the receiving space 10 present, the torsion spring 42 causes an opposite the displacement when the absorbent body swells 13 directed displacement of the loading element 26, with which the second valve leg 38 comes into effect. This also shifts the closure body via its nose 40 18 in a valve closure standby position. When the suction air flow is switched on the closure body 18 abruptly in the closed position relocated, with which no operation of the suction attachment is possible without an inserted absorbent body 13.

In this embodiment too, the receiving space leg closes 39 in the respective active position (Fig. 12 13) an acute setting angle alpha or Beta with the inner wall of the receiving space 10.

Due to the previously described configurations, a Given suction attachment 1, which is characterized by a increased security. That in the suction channel Valve V is arranged both at an overlay of suction air flow through a liquid phase as well when the maximum level of the liquid collection body is reached F closed.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Absorbent body 13 consists of a fleece cloth.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Absorbent body 13 is interspersed with an absorber material.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Liquid collecting body F radially outside with respect to the Suction channel 5 is arranged.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Absorbent body 13 during the absorption of liquid undergoes an essentially axially directed expansion.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Absorbent body 13 during the absorption of liquid an essentially radially directed expansion.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Absorbent body 13 essentially perpendicular to it Individual layers 14 extending in the direction of expansion consists.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Layers 14 are wrinkled together.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which a Receiving space 10 for the liquid collecting body F is annular.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Liquid collecting body F the receiving space 10 in the circumferential direction only partially filled.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the the receiving space 10 on the upstream side a connection opening 12 to the suction channel 5.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Connection opening 12 is formed slot-like.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Suction channel 5 forms a throughflow section 9, which of the receiving space 10 for the liquid collecting body F is surrounded.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Connection opening 12 assigned to an inner surface 15 the suction channel wall is formed.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Flow section 9 on the inlet side of a funnel section 8 has.

Subject of the invention, alone or in combination with the previously explained objects of importance is, is also a suction device attachment, in which in the Receiving space 10 for the liquid collecting body F in Longitudinal direction of the receiving space 10 extending transport routes are designed for the liquid.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Transport routes essentially as axial, in the inner surface of the outer wall 31 of the receiving space 10 grooves formed for the liquid collecting body F. 32 are formed.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Acting element 26 in the flow direction at the end is arranged in the receiving space 10.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which two Valve legs 37, 38 are formed, a first Valve leg 37 with the suction body 13 inserted comes into effect and a second valve leg 38 removed absorbent 13.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the two valve legs 37, 38 with each other approximately a right one Include angles.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the second valve leg 38 in an approximately straight extension to the receiving space leg 39 is formed.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the an operative position of the second valve arm 38 Spring preload of the loading element 26 in a basic position is reached.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Receiving space leg 39 has a bevel 43, to guide the absorbent body 13 between the receiving space leg 39 and an inner wall of the receiving space 10 when the absorbent body 13 is inserted.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Recording space leg 39 in the operative position of the first Valve leg 37 with an inner wall of the receiving space 10 a first acute setting angle (alpha) includes.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Recording space leg 39 in the active position of the second Valve leg 38 a second acute setting angle (Beta) which is opposite to the first one Angle (alpha) is aligned.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the second valve leg 38 on a separate, lever-like Acting element 26 is formed, wherein both loading elements 26 by a between compression spring 41 acting on them are connected.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the second loading element 26 rotatable in the end region of the receiving space 10 is stored.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a suction device attachment, in which the Compression spring 41 between the respective receiving space legs 39 of the loading elements 26 acts.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a liquid collecting body in which the absorbent body 13 in the course of absorbing liquid an essentially axially directed expansion takes place.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a liquid collecting body in which the absorbent body 13 in the course of absorbing liquid an essentially radially directed expansion takes place.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a liquid collecting body in which the absorbent body 13 from substantially perpendicular to its direction of expansion, individual Layers 14 exists.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a liquid collecting body in which the layers 14 are wrinkled together.

Subject of the invention, alone or in combination with the previously explained objects of importance is also a liquid collecting body in which the liquid collecting body F has an annular section Floor plan.

All the features disclosed are essential to the invention. In the disclosure of the application is hereby also the Disclosure content of the associated / attached priority documents (Copy of the pre-registration) in full included, also for the purpose, characteristics of this Documents in claims of the present registration with to record.

Claims (10)

Suction device attachment (1), for example for wet cleaning of Surfaces, with a suction channel (5), being in the suction channel (5) one that can be triggered by exposure to moisture Valve (V) is arranged, the valve (V) one Movable closure body (18), characterized in that that the closure body (18) by the in parts of liquid entrained in air flow indirectly by means of an actuating element thereby moved (26) for shifting into a closed position is controllable. Suction device attachment according to claim 1 or in particular thereafter, characterized in that the loading element (26) through a liquid collecting body (F) is acted upon. Suction device attachment according to one or more of the preceding Claims or in particular according thereto, thereby characterized in that the liquid collecting body (F) is a swellable absorbent body (13). Suction device attachment according to one or more of the preceding Claims or in particular according thereto, thereby characterized in that the liquid collecting body (F) in In the course of its expansion, the loading element (26) operated. Suction device attachment according to one or more of the preceding Claims or in particular according thereto, thereby characterized in that the liquid collecting body (F) has a circular segment-shaped plan. Suction device attachment according to one or more of the preceding Claims or in particular according thereto, thereby characterized in that in the flow direction before the flow section (9) a flow influencing for phase separation is trained. Suction device attachment according to one or more of the preceding Claims or in particular according thereto, thereby characterized in that the loading element (26) lever-like and in the end area of the receiving space (10) is rotatably mounted, with a receiving space leg (39) and a valve leg (37, 38), the receiving space leg (39) from the absorbent body (13) is acted upon. Liquid collecting body (F) for a suction device attachment (1), e.g. for wet cleaning of surfaces, in particular for a suction device attachment (1) after one or several of claims 1 to 34, characterized in that the liquid collecting body (F) is a swellable Absorbent body (13). Liquid collecting body according to claim 35 or in particular afterwards, characterized in that the absorbent body (13) consists of a fleece cloth. Liquid collecting body after one or more of claims 35 to 36 or in particular according thereto, thereby characterized in that the absorbent body (13) with a Absorber material is interspersed.

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