DE102009041728A1 - Hand-guided electrical vacuum cleaner operating method, involves driving blower by electric motor, and blowing suction air emerging from rough dirt strainer for separation of fine dust still contained in suction air into filter bag - Google Patents

Abstract

The method involves driving a blower (3) by an electric motor, and sucking air through a suction opening. A suction air flow is led by a rough dirt strainer (14) with a rough dirt container (17). Suction air emerging from the rough dirt strainer is blown for separation of fine dust still contained in the suction air into a filter bag (10). The suction air is blown for emptying the rough dirt container and delivered coarse dirt is incorporated into the filter bag. Rough dirt is transported by the suction air passed into the rough dirt container into a receiver container in a cleaning station. An independent claim is also included for a displaceable vacuum cleaner device including a blower operated by electric motors.

Description

The Invention relates first a method of operating a vacuum cleaner with an electric motor powered blower and a suction port through which is sucked, wherein the suction air flow is passed through a coarse dirt separator with associated coarse dirt container.

method the type in question are known. About the means of the vacuum cleaner side blower applied suction air flow is of the surface to be machined on the Suction mouth Dust and dirt removed and one in the vacuum cleaner arranged coarse dirt collector supplied. In this regard are for separating the coarse dirt Zyklonabscheider known. In these becomes due to acting centrifugal forces deposition of coarse dirt particles achieved, collected in a, associated with the separator coarse dirt container become. The extracted from the coarse dirt suction occurs thereafter from the coarse dirt separator. This causing the Saugluftstromströmung fan is mostly in the flow direction considered behind the coarse dirt separator provided.

in the With regard to the above-described prior art, a technical Problem of the invention seen in a vacuum cleaner in speech standing type in particular with regard to its filter properties continue to improve.

These Problematic is first and substantially solved by the subject-matter of claim 1, wherein It is based on that emerging from the coarse dirt separator Suction air for the separation of fine dust contained therein a filter bag is blown. According to the proposed method improved cleaning of dirt-laden suction air is achieved. The filter bag is preferably terminal, d. H. downstream in Saugluftströmung the blower arranged, accordingly, over the surface of the breathable Filter bag, the filtered suction air is blown over a large area. Of the Filter bag preferably consists of a Hepa filter material, further optionally also for odor reduction activated carbon or having an activated carbon filter layer. In addition, by the proposed Method a separate collection of coarse dirt and fine dirt reached. For example, sucked coarse parts, such as jewelry parts or game building blocks are separated in the separator-side coarse dirt container, which is further preferred for viewing and control of the recorded coarse dirt is evident. The fine dust receiving filter bag is in common Detachable from the vacuum cleaner or removable from this, in order to supply this to a disposal.

Further Features of the invention are below, also in the figure description, often in their preferred assignment to the subject of the claim 1 or explained features of further claims. But you can also in an assignment to only individual features of the claim 1 or the respective further claim or in each case independently of Meaning.

Of the Bulk waste container is for emptying example openable, possibly off the vacuum cleaner for disposal of coarse dirt in a waste container removed. In a preferred embodiment, it is provided that for emptying of the coarse dirt container Suction air is blown through the coarse dirt container and thus discharged coarse dirt in the filter bag is entered. Accordingly, the emptying of the coarse dirt container takes place internally inside the vacuum cleaner, this triggered by, for example User intervention, alternatively controlled by a device-side Control unit, for example, depending on the level coarse dirt container, further alternatively time-dependent triggers the emptying process. The suction air, d. H. the sucked through a device opening from the environment Air, is directed to drain the coarse dirt container so that the in the container entrained collected coarse dirt particles and in the usual Suction operation, d. H. in the usual Floor cleaning operation of the fine dust collection serving filter bag is supplied. The latter includes hereafter both fine and Coarse dirt particles, with which the latter by a conventional filter bag change a disposal supplied become. The in the usual vacuum cleaner operation not directly affected by the suction air coarse dirt container is targeted to emptying the same targeted by the suction air, this is such that the coarse dirt particles are blown out. This is achieved in one embodiment by a targeted circuit the Saugluftwege, for example by means of provided switching valves.

In an alternative embodiment, the injection of suction air into the coarse dirt container is carried out with the aid of a reversal of the direction of rotation of the blower. Accordingly, the suction air flow in the area of the fan after a reversal of the same direction by 180 ° opposite to the usual prevailing in vacuum cleaner flow, so that further example, by the usual vacuum cleaning the air outlet from the coarse dirt flow channel serving to drain the coarse dirt container from the environment sucked in air is blown. The reversal of direction the blower is achieved for example by a reversal, according to a reversal of the direction of the impeller is effected. The blower is in this case a reverse blower. Alternatively, the fan can also be rotated, for example, accommodated in a flow-tight capsule, by a total of 180 °, whereby the flow direction is reversed while the direction of rotation of the fan wheel remains the same. Also, it is possible to rearrange the direction of rotation of Saugluftströmung a rearrangement of the Saugleitungsabschnitte the fan.

moreover proves to be an embodiment of advantage in which a cleaning station is provided, wherein the vacuum cleaner for emptying the coarse dirt container on the cleaning station is connected and the coarse dirt by means the in the coarse dirt container introduced suction air transported into a receptacle in the cleaning station is, this further preferably by blowing the suction air in the Bulk waste container for example, by reversing the direction of rotation of the vacuum cleaner side Blower. Alternatively, the cleaning station with a suction fan for emptying of the coarse dirt container Mistake. Accordingly, a cleaning of the coarse dirt container takes place in an external receptacle. The emptying process can be triggered automatically with docking of the Vacuum cleaner at the cleaning station, alternatively triggered by the user Connection. Independently this is with the onset of the emptying process, alternatively immediately with the docking of the vacuum cleaner at the cleaning station an access to the coarse dirt container open. The particulate filter bag is in this context preferably further designed as a disposable filter, depending on from the degree of filling and / or depending is disposed of separately by a residence in the vacuum cleaner.

In a development of the subject invention is provided that after connecting the vacuum cleaner to the cleaning station of the filter bag in total or contained in the filter bag fine dust in the Cleaning station is transferred. So, with the connection of the vacuum cleaner to the cleaning station both emptying the coarse dirt container and disposal the filter bag or its contents feasible. In case of disposal the fine dust contained in the filter bag this is accordingly the emptying of the coarse dirt container blown, this on for example, by blowing suction air into the filter bag, what further, for example, in continuous filters, d. H. not changeable Filtering offers.

The the above-described method finds particular application in vacuum cleaners, in particular household vacuum cleaners, so on in hand-held vacuum cleaners, beyond but also, especially in connection with an assignable Cleaning station, with automatically movable Staubsauggeräten, so-called vacuum robots.

in the Towards the emptying of the coarse dirt container by blowing in suction air is further preferred of the bottom cleaning serving suction mouth of the Vacuum cleaner closed. The required suction air is via a further, sucked to the environment free device opening.

The The invention further relates to a movable vacuum cleaner with an electric motor operated fan and one of a suction air flow penetrated filter bag, wherein the suction air flow generated by the blower becomes.

Staubsaugeinrichtungen the type in question are known, especially in hand-held vacuum cleaners, on especially for the Household area, above also in the form of self-acting mobile tillage equipment, such as vacuum robots or the like. For vacuum cleaning of the soil to be cared for is a vacuum cleaner side fan generates a suction air flow through a, to be cared for soil is sucked in facing suction mouth. The dissolved over the suction and entrained dirt and Dust particles are over an air flow channel of the vacuum cleaner in the arranged on or in the vacuum cleaner Filter bag supplied. This filter bag is designed to be permeable to air, wherein the air flowing through the filter bag wall for retention the particle is filtered. Such filter bags are in particular from a nonwoven material, further for example from a Hepa filter material, which also fine dust separates.

in the With regard to the prior art described above, a technical problem of the invention seen in it, a movable vacuum cleaner the type in question, in particular with regard to the suction air filter properties continue to improve.

This problem is solved first and foremost by the subject matter of claim 6, wherein it is pointed out that the suction air stream before entering the filter bag passes through a coarse dirt separator with an associated coarse dirt container. According to this embodiment, a separate filtering of coarse material and fine dust is achieved. The coarse material, which is sucked up via the suction mouth and entrained with the air flow, is separated within the coarse dirt separator and collected in the coarse dirt container. The separator filters through a grid, a pressure separator or an impact separator optionally by forming the separator as Zyklonabscheider, whereby coarse material to be separated according to the centrifugal forces acting on these The further fine-dust suction air passes through after exiting the coarse dirt filter serving the fine dust filtration filter bag. Accordingly, after a suction possibly accidentally sucked coarse parts are easily accessible through the separate filtration, this example by opening the coarse dirt container. A usual destruction of the filter bag in the usual single-filter systems for coarse and fine dirt is not necessary for the screening of sucked coarse parts accordingly. According to the proposed solution, it is possible to control the collected coarse dirt before its final disposal. In addition, the solution offers the option of selecting the filter bag for the material selected solely for fine dirt particles. Due to the lack of entry of coarse dirt in these, the stability of the filter bag is correspondingly lower selectable, such as, for example, omitting a bag-inner support or protective layer.

Further Features of the invention are below, also in the figure description, often in their preferred assignment to the subject of the claim 6 or explained to features of further claims. But you can also in an assignment to only individual features of the claim 6 or the respective other claim or each independently Meaning.

A preferred embodiment of the subject invention provides that the coarse dirt separator for emptying the coarse dirt container into reverse direction of the suction air flow is enforceable. Corresponding flows through the suction air in the course of emptying the coarse dirt separator or the coarse dirt container contrary to the orientation in the usual vacuum cleaning operation in this opposite flow direction. Remains in the container Collected coarse material in the course of the usual Staubsaugbetriebs in Essentially unaffected by the coarse dirt separator out Air flow, so for emptying it is targeted in the direction of the collected Coarse dirt, so that this blown out of the coarse dirt container becomes. For this purpose, as in the usual vacuum cleaning operation, Air sucked out of the vacuum cleaner environment. This emptying process is preferably triggered by user intervention, so on, in particular after completion of a vacuuming process. Alternatively is also one device side, automatic release possible, this is also preferred after completion of a vacuuming process, being the automatic release further example fill level or time-dependent is.

When Particularly advantageous is an embodiment in which the suction air stream, the blower driven by the electric motor after leaving of the coarse dirt separator and before entering the filter bag interspersed. Accordingly, the fan is due to the flow direction upstream grobschmutzabscheiders only from, from the coarse dirt liberated suction air, so that in an advantageous manner High-performance fan, a so-called clean air blower, can be used. Such blowers work with high numbers of revolutions, for example at more than 15,000 rpm, preferably more than 60,000 rpm. Due to the coarse dirt sensitivity of such high-performance blowers these in so-called single-filter systems only use in one Arrangement behind the dust filter bag - viewed in the flow direction -. in this connection is the dirt-laden suction through the filter bag or through its wall sucked. The filter bag is in a pressure-resistant Chamber arranged such that the filter bag in a vacuum area located. There are appropriate sealing measures required. Further is in such a system usually provided behind the suction fan exhaust vent relatively small in terms of area, so that relatively high blow-off speeds of the filtered Set the air. According to the proposed pre-selection of Coarse material within the coarse dirt separator is the arrangement of a such high-performance blower in the flow direction possible in front of the filter bag, which provides an effective suction cleaning result. Next is through the chosen one Arrangement of the filter bag terminal be formed, so that its outwardly facing bag surface a relatively large blow surface forms and so does the flow velocity the discharge air is substantially reduced. Because, according to the proposed Arrangement of the fan not necessarily arranged in a sealed housing in front of the filter bag It can be an elaborate one tight cladding of the filter bag or a seal of the system behind the filter bag eliminated, which further positively affects the size and thus the weight of the vacuum cleaner.

When emptying the coarse dirt container by Saugluftbeaufschlagung in the reverse direction provides in a preferred embodiment of the suction air flow into a filter bag, in which the disposal of the coarse dirt this is spent. This filter bag is preferably formed when used alone for receiving coarse dirt from a comparison with the, the particulate matter receiving filter bag simplified filter material. The only coarse dirt receiving filter bag accordingly does not necessarily have Feinststaubfiltereigenschaften on. The coarse material ultimately collecting filter bag can externally on the Vacuum cleaner must be connected for emptying the coarse dirt container. Preferred is an arrangement of the filter bag within the vacuum cleaner, more preferably in the form of a removable filter bag. In this context, it proves to be handling technology particularly advantageous if the suction air stream delivers when emptying the coarse dirt in the same filter bag, which serves in the vacuum cleaning the fine filtration of the suction air flow to the fan. Accordingly, only one filter bag is provided in the vacuum cleaner, which additionally accumulates the coarse dirt discharged from the coarse dirt container at a time offset from the suction operation and after the suction flow direction has been reversed.

For this the filter bag in a preferred embodiment, two inlet openings on, more preferably in the range of a conventional, the connection of the Filter bag to the associated device surface serving holding plate, wherein on the one hand an entry opening for the entry of fine dust and on the other an entry opening to Entry from, first separated from the coarse dirt separator and hereafter from this discharged coarse dirt serves. Preferably, the inlet openings Covered, so in particular by arranging by Saugluftanströmung opening swivel lids, in their closed position can be spring loaded. Also one to the entrance openings upstream valve assembly is possible in this regard. Depending on the operating mode - vacuum cleaning or Coarse dirt emptying operation - is only one of the two entry openings opened, while the other closed is. Furthermore, only one entry opening can be provided on the filter bag side, which upstream in terms of flow direction Strö mungskanalabschnitt is assigned, in two independent, optionally valve-closable channel branches is divided, with a channel branch leads to the fan and the directional transport the fine dust-laden suction air flow in the vacuum cleaning operation is used and the other channel branch leads to the coarse dirt container.

to Emptying the coarse dirt container is in a development of the subject invention a separate, the blower upstream intake opening intended. about this is sucked in the emptying operation air from the vacuum cleaner environment. In a development, the suction opening may be equal to the suction mouth opening, being that of the suction mouth downstream suction channel corresponding to the two operating modes branched. Further alternatively, the separate intake port is connected downstream is provided to the coarse dirt separator, this particular with Reference to the air flow direction in the vacuum cleaning operation.

to Emptying the coarse dirt container is this traversed in the reverse direction of the suction air flow. This is in one embodiment by means of a change in the direction of rotation of the blower reached. With respect to the flow direction in the vacuum cleaning operation, after a change in the direction of rotation of the blower the suction channel connecting the coarse dirt separator to the blower a blower, which sucked in the sucked air from the environment in blow the coarse dirt separator and further into the coarse dirt container. The reversal of direction of the blower is with axial blowers achievable, for example, by appropriate reversal of the blower driving Electric motor, further in the manner of a reverse blower. Preferred is an embodiment where the fan is inside one, extending the suction channel, airtight chamber rotated 180 ° is, this with the same direction of rotation of the impeller. The necessary Rotary displacement of the fan is preferably carried out electrically, alternatively mechanically by Benut cereingriff. Also can two provided in opposite directions, alternately switchable blower provided be. Alternatively, the reversal of the air flow direction is a swap the channel connection areas relative to the fixed blower feasible, after which in the usual vacuum cleaning operation assigned as a suction channel portion of the blast side of the blower is and the blow port of the suction side.

Further alternatively, the flow direction reversal reachable by appropriate switching of the flow paths. So is provided that from the suction mouth of the vacuum cleaner for coarse dirt premier Suction line can be shut off, so in particular by arranging a corresponding Switching valve within the suction line. This leading to the suction port suction line is closed in the emptying mode.

Further Preferably, that of the blower leading to the filter bag Lead a switching valve, to return the suction air flow in the coarse dirt separator. Accordingly, in the vacuum cleaning operation through the blower in the direction of the filter bag guided Saugluftströmung ago the filter bag deflected for injection into the coarse dirt separator, this preferably using a separate suction in Purge flow direction looking at the blower, d. H. continue between blower and coarse dirt separator, what further the return of the suction air stream into the coarse dirt separator over a separate line takes place.

Further alternatively, the line leading from the blower to the filter bag comprises a switching valve for connection to a suction opening separate from the suction mouth, this more preferably in connection with a configuration in which the Emptying of the coarse dirt container by means of a change in the direction of rotation of the blower takes place.

Regarding the above-described switching valves may be, for example, conventional or multi-way valves that are manually or electrically, be controlled pneumatically or hydraulically. Alternatively, the Valves designed as a slide, further example, as a multi-way valve, via which further, for example, at the same time off or schiebertes multiple channels can be.

Also is alternatively provided that the coarse dirt container for Emptying is rotatable, so in a further preferred embodiment a reversal of the airflow through the coarse dirt container to achieve. For example, the coarse dirt container is like this rotatable, that one in the usual Vacuum cleaning operation associated with the blast channel in the emptying mode associated with the suction channel and in the usual Staubsaugbetrieb the Suction channel associated opening in emptying mode the blower duct. Such a design offers itself in a further preferred embodiment in a coarse dirt separator in the form of a filter, which filter in the The dust-laden air flows through the vacuum cleaning operation, wherein coarse dirt particles at a preferred transverse to the flow direction deposited, more preferably coarse-meshed filter deposited become. The coarse particle cake accumulating here in the vacuum cleaning operation is due to rotation of the coarse dirt container and subsequent air flow out blown out of the coarse dirt container for the opposite direction to the vacuum cleaning operation. This proves to be a further embodiment of advantage in which of the coarse dirt container two or more chambers, which by turning the coarse dirt container with a first and a second air flow can be flowed through, the air currents are directed opposite to each other. The chambers are further preferably identically designed, this further in particular with regard to their cross-sectional design and the inclusion of a Filter element or the like. This is still a chamber always in the flow channel between the surface to be cleaned facing the suction mouth and the blower switched, for filtering the dust-laden air and for the purpose the deposition of coarse dirt. Another, preferably adjacent and is axially parallel to the above-described chamber extending chamber switched in operation in the air flow path between blower and fine dust filter, the guided through this chamber airflow in the opposite direction to the air flowing through the first chamber is directed.

By Turn the coarse dirt container the chambers of either the Saugluft- or the Blasluftleitung ago or behind the blower assigned, which after a corresponding twisting a previously Chamber used for coarse filtration of dust - laden air Emptying the same is assigned to the blast air flow behind the blower, while the associated before twisting the Blasluftstrom and accordingly emptied chamber before twisting again the suction air line before the blower is assigned. According to this embodiment is a constructive easy solution achieved, the further preferred without valves or the like for switching possible airways. In addition, in this embodiment not differentiated between vacuuming and emptying operation, since both operating modes are carried out at the same time. During the Vacuum cleaning operation and appropriate filtration of coarse dirt In one chamber, another chamber is emptied due to blow-through in opposite direction, which previously in the other chamber separated coarse dirt particles are discharged into the fine dust filter.

In a handling technology favorable training it is provided that one of the chambers can be removed from the coarse dirt container is, for example, to see through in the vacuum cleaning operation in the chamber deposited coarse dirt particles. If necessary accidentally absorbed coarse parts, such as jewelry or Game building blocks can so before a disposal of the coarse dirt parts still be taken out. The coarse dirt in the removable chamber is poured through in a separate waste container disposable. Preference is given in this regard Reinstall the removable chamber, if necessary after review of the contents, in the coarse dirt container, for a corresponding Turn the coarse dirt container over the rear the suction fan to be emptied into the fine dust filter.

In this context, it is advantageous if a chamber can not be flowed through in a removal position, while at least two further chambers are connected to the air flow in mutually opposite directions. Thus, the vacuum cleaner is still operable even after removal of a correspondingly positioned chamber, so that during a conventional Staubsaugbetriebs the contents of the removed chamber can be viewed. The not in the removal position air-flow chamber is correspondingly in the vacuum cleaning operation in a ready position. In the case of a further preferred arrangement of three chambers in the coarse dirt container, two chambers are in use during operation and are flowed through in opposite directions. The third chamber is not in use at this time and is not flowed through until the coarse dirt container is rotated by preferably 120 °. After rotation, the third chamber and one of the other two chambers in use and the other chamber in the take-off or standby position. If the coarse dirt container is rotated three times by preferably 120 °, the starting position is reached again.

to Removing a chamber can this drawer-like pulled out of the coarse dirt container become. Swinging is also possible in this regard.

Further preferred is the coarse dirt container about an axis that corresponds to the direction of flow, rotatable, further about an axis which is parallel to the geometric longitudinal axes of the channels. The suction or Blaskanalabschnitte are at least in the region of Bulk waste container so merged, that by revolverartiges twisting of the coarse dirt container respectively two chambers are the suction and Blaskanälen assignable.

In a development of the subject invention is provided that the emptying of the coarse dirt container in a separate from the filter bag receptacle he follows. This may be an externally assignable receptacle, which over an openable Interface of the vacuum cleaner housing flow-tight to the coarse dirt container is connected. The emptying takes place here, for example dependent on a docking detection automatically by turning on the vacuum cleaner side blower, this further, as described, with corresponding reversal of the flow direction. Alternatively done the emptying through a switchable, second blower. This is preferably a separate from the vacuum cleaner blower on preferably an electric motor-driven blower assigned the separate receptacle.

When particularly advantageous, in particular in connection with vacuum robots, about that but also with usual, hand-held Vacuum cleaners, proves to be a development in which the vacuum cleaner one of these opposite stationary Assigned cleaning station is connected to which the vacuum cleaner, for emptying the coarse dirt container and / or the filter bag. These Cleaning station is preferred in the case of a vacuum robot Base station, at which also a recharge of the device side Accumulators takes place. The cleaning station has the separate receptacle, in which the coarse dirt container is emptied. Thus, in this context, a mechanical or even electrical contact, which is docking the vacuum cleaner recorded and optionally automatically the emptying process triggers. Here, the device-side fan be used. has the cleaning station over its own power supply, so continues to offer a solution in which a separate blower is provided in the cleaning station is to suck the vacuum cleaner coarse dirt container. Corresponding this embodiment are coarse dirt and in the filter bag Collected fine dirt separately fed to a disposal. Further alternatively, over the cleaning station also contained in the filter bag fine dust or alternatively, the filter bag as a whole are transferred to the cleaning station, after which the docked vacuum cleaner is completely emptied.

below the invention with reference to the accompanying drawings, which only various embodiments represents, closer explained. It shows:

1 a vacuum cleaner in the form of a hand-held electric vacuum cleaner in perspective view;

2 a schematic representation of the flow paths and filter sections of the vacuum cleaner, in a first embodiment, concerning the vacuum cleaning operation;

3 one of the 2 corresponding representation in the emptying operation;

4 another one 2 corresponding representation, relating to the vacuum cleaning operation in a second embodiment;

5 according to the emptying operation 3 However, the embodiment according to 4 concerning;

6 a further schematic representation according to 3 relating to a third embodiment in the emptying operation;

7 another one 2 corresponding representation, relating to the vacuum cleaner operation in a fourth embodiment with a Schieberverstellbarkeit;

8th one of the 7 corresponding representation in the emptying operation;

9 the slider according to the fourth embodiment in a position according to 7 ;

10 as 9 , in a position according to 8th ;

11 a further embodiment of the slider in a position according to 9 ;

12 the slide accordingly 11 in a position according to 10 ;

13 another one 2 corresponding illustration, relating to the vacuum cleaner operation in a fifth embodiment with a rotatable hose connection;

14 one of 13 corresponding representation in the emptying operation;

15 the enlargement of the area XV in 14 ; 16 another one 2 corresponding illustration, relating to the vacuum cleaner operation in a sixth embodiment with a coarse dirt separator;

17 one of the 16 corresponding representation in the emptying operation;

18 the coarse dirt separator in plan view;

19 the section according to the line XIX-XIX in 18 ;

20 one of the 18 corresponding representation, but concerning a further embodiment;

21 the section according to the line XXI-XXI in 20 ;

22 a longitudinal section through a coarse dirt separator in a further embodiment;

23 a plan view of a coarse dirt separator in a further embodiment;

24 the section according to the line XXIV-XXIV in 23 ;

25 one of the 23 corresponding representation, but concerning a further embodiment;

26 the section according to the line XXVI-XXVI in 25 ;

27 in a perspective view of another embodiment of a coarse dirt separator with removable chambers.

Shown and described is first with reference to 1 a vacuum cleaner in the form of a hand-held vacuum cleaner 1 , in particular household vacuum cleaner, which is designed as a hand-held handle device. This first has a base unit 2 on, with an electric motor incorporated therein for a suction / blower unit 3 ,

The power supply in the base unit 2 integrated fan 3 via an electric cable 4 ,

Next has the base unit 2 a gooseneck-shaped extension, which extends over the areas one on the base unit 2 docked filter bag assembly extends. In the area of the free end of this extension forms a plug-in receptacle for a stem 5 of the vacuum cleaner 1 out. In the area of the free end of the stalk 5 is an operating handle 6 intended. This has a thumb-actuable actuator in the form of a slide switch, which in particular the performance of the base unit in the 2 recorded electric motor or the blower 3 is adjustable.

For soil cultivation is the basic device 2 fluidly with a header 7 connected. This may be a suction nozzle having a rotating brush.

The suction mouth 8th of the attachment 7 is fluidly in communication with a base device side flow channel 9 ,

On the base unit 2 is a filter bag 10 arranged interchangeably, wherein the mechanical and fluid connection with the base unit side flow channel 9 in the region of a preferred transverse to the longitudinal extent of the base unit 2 aligned separating plane T is reached.

The filter bag 10 has a retaining plate 11 on, which preferably consists of a hard plastic material. The in the filter bag attachment position preferably parallel to the dividing plane T aligned holding plate 11 is with an entrance opening 12 Mistake. At the, the base unit facing away underside of the retaining plate 11 the filter bag is attached, such as with the holding plate 11 verscheißt.

The filter bag 10 or the filter bag material can in this case be multi-layered, further optionally at least partially made of synthetic fibers. Preferably, the filter bag wall is made of a Hepa filter material.

The Filterbeutelwandung is permeable to air, so that through the filter bag 10 guided, dirt-laden air flow with complete filtration of all relevant contaminants, possibly also pollutants, through the filter bags can escape freely into the environment (the arrows a illustrate the preferred large-scale blow-out of the filtered air in preferably a variety of different directions).

More preferably, the bag wall is formed self-supporting. Next, one, the filter bag 10 or its bag wall comprehensive, air-permeable protective cover 13 be provided.

The fan 3 is in the flow direction in the vacuum cleaning operation as shown in FIG 2 in the flow path between the suction mouth 8th and filter bag 10 switched, sucks the air through the suction port 8th and blow them into the dust filter bag 10 one.

In the vacuum cleaning operation according to 2 the blower 3 upstream in the base unit 2 a coarse dirt separator 14 , here a cyclone separator provided. In this opens with the suction mouth 8th connected flow channel 9 , The mouth is preferably designed such that a desired spiral flow inside the cyclone separator is thereby supported. In particular, it is preferred that an outlet direction is directed skewed to a - preferably centrally - the cyclone separator deduction direction of the dust-laden air. For example, it can flow in practically tangentially into the cyclone separator, which is preferably formed in the manner of a cylinder in this area. Vertically aligned with the connection section of the flow channel to the cyclone separator is further into the cyclone separator a centrally arranged dip tube 15 intended. Whose projecting into the cyclone separator free end opens in a plane vertically below the entrance level of the flow channel 9 in the cyclone separator. Next is the free end 16 vertically spaced from one to the cyclone in the bottom region of the subsequent subsequent coarse dirt collecting chamber or coarse dirt container 17 , The latter tapers in a funnel shape opposite the dip tube inlet side of the cyclone separator. More preferably, it is a lower portion of the cyclone separator itself.

The one in the base unit 2 provided coarse dirt separator 14 serves for pre-separation of coarse dirt in the course of the usual suction processing as shown in FIG 2 , In the embodiment, by the tangential inflow of dirt-laden suction air through the flow channel 9 achieved in the cyclone an air turbulence, according to the centrifugal forces acting on the coarse dirt particles, a separation of the same is achieved from the air flow. The coarse dirt particles settle in the Bo denbereich of the cyclone separator or in the coarse dirt container formed here 17 from.

The freed from the coarse dirt suction air flow (arrow b) is hereinafter, according to suction on the blower 3 through the dip tube projecting into the cyclone separator 15 sucked, wherein in the area of the free dip tube end 16 the opening with a, possibly aufgewirbelte coarse dirt particles retaining sieve 18 is provided.

Since the suction air stream b is no longer mixed with coarse particles as a result of the preliminary separation, the blower circulated by the suction air flow b can flow through it 3 a high performance blower with effective efficiency and high speeds. It is preferred according to a so-called clean air blower used.

The after the pre-separation only with fine dust offset suction b is a in the flow direction in vacuuming behind the blower 3 subsequent channel section 19 in the filter bag 10 blown in the embodiment, the air flow, if appropriate, but also a separately actuated actuator one, in non-operation, the inlet opening 12 of the filter bag 10 closing, if necessary this spring-assisted flap 20 in open position.

In the in the 2 to 5 illustrated embodiments, the coarse dirt container 17 internally, ie within the vacuum cleaner 1 emptied. This emptying takes place by blowing out the in the coarse dirt container 17 collected particles into the filter bag 10 ,

For this purpose, initially an emptying channel 21 provided at one end at a - preferably further - inlet opening 22 of the filter bag 10 is connected in the area of the holding plate. Also this filter bag side opening 22 is like the inlet opening active in the vacuum cleaning operation 12 by a spring-loaded flap, for example 23 initially closed.

The other end of the drainage channel 21 is connected to a bottom opening 24 of the coarse dirt container 17 which opening 24 in the usual Staubsaugbetrieb according to the 2 respectively. 4 is closed, for example by a check valve 25 ,

Further with respect to the in the 2 and 3 illustrated first embodiment are with respect to the flow direction in front of and behind the fan 3 each switching valves 26 . 27 preferably arranged in the form of 2- / 3-way valves. These are in the Staubsaugbetriebsstellung according to 2 switched so that the suction air flow b from the coarse dirt separator 14 coming immediately over the fan 3 and the adjoining channel section 19 in the filter bag 10 is guided. In emptying mode according to 3 are both switching valves 26 and 27 Switched so that the immediate fluid connection of the fan 3 to the dip tube 15 and on to the channel section 19 is interrupted. Rather, the blower 3 now connected at its suction side directly in terms of flow with the vacuum cleaner outside. The switching valve 26 has the blower 3 from the dip tube 15 fluidly separated. For this purpose, a separate intake channel 28 provided at one end with the switching valve 27 interacts and at the other end in a suction port 29 opens into the housing of the base unit 2 is trained.

The further switching valve 27 switches in the emptying mode a return flow channel 30 free, for direct connection of the blower side of the blower 3 with the coarse dirt separator 14 , The preferably provided as a separate line return flow 30 opens in the illustrated Ausführungsbei game ceiling side in the cyclone, the orientation of the return flow channel 30 is further selected so that the guided through this air flow at entry into the cyclone separator at least tends to be parallel to the separator longitudinal axis and / or further targeted towards the bottom coarse dirt container 17 is directed.

The emptying operation can be triggered automatically by means of a vacuum cleaner-side control unit, such as depending on a degree of filling of the coarse dirt container 17 , for example, depending on an operating period of the vacuum cleaner 1 after a last emptying of the coarse dirt container 17 , In addition, the emptying operation can also be triggered by the user himself, so on, for example, by an appropriate control of the operating handle 6 , More preferably, the emptying operation can only be triggered, for example, triggered automatically when the vacuum cleaner 1 is in a rest position, for example, after completion of a vacuuming process.

When the emptying mode is triggered, the switching valves become 26 and 27 switched as described above, wherein the valves to be switched can be coupled via a linkage. The bottom opening of the coarse dirt container occluding check valve 25 is spent in the open position. In addition, via another check valve 31 the entrance of the flow channel 9 in the coarse dirt separator 14 locked, wherein further a flow channel inlet opening 32 due to the lack of Saugluftbeaufschlagung by, for example, a further spring-loaded flap 33 is closed.

About the blower 3 a suction air flow b is generated in the emptying operation, this under suction through the separate, outwardly free intake 29 , About the return flow channel 30 is sucked from the outside clean air into the coarse dirt separator 14 and further blown into the coarse dirt container, wherein the collected here coarse dirt particles on the discharge channel 21 under appropriate opening of the inlet opening 22 associated flap 23 in the filter bag 10 be transported. After preferably complete emptying of the coarse dirt container 17 and appropriately completed coarse dirt transfer into the filter bag 10 the latter can be removed for the common disposal of fine and coarse dirt particles.

In the in the 4 and 5 illustrated second embodiment, the flow reversal for blowing suction air into the coarse dirt separator 14 or for blowing out and emptying the coarse dirt container 17 solved by a reversal of the direction of rotation of the blower 3 , Also in this embodiment is between the blower 3 and the filter bag 10 On-off valve 27 arranged, which in the vacuum cleaning operation according to 4 the channel section 19 according to the injection of fine dust tainted suction air into the filter bag 10 on. Like, for example 4 can be seen, given in the embodiment described above flow channel 30 drop out without replacement.

In the emptying operating position according to 5 is the connection between fans 3 and channel section 19 prevented. Rather, the switching valve connects 27 in this position, the blower 3 with an outward to the vacuum cleaner environment leading intake 28 with one in the housing wall of the base unit 2 trained suction port 29 ,

Accordingly, in accordance with the vacuum cleaner operation 4 with the blast side of the blower 3 connected blast line in the discharge operating position according to 5 a suction line.

To reverse the direction of rotation of the blower 3 this is according to 5 (in dot-dash line style is an intermediate position of the blower 3 shown), for example, rotated, preferably, as in the embodiment because of the arrangement chosen there, rotated by 180 °, after which the suction side of the fan 3 the switching valve 27 or the intake duct 28 and the blast side of the blower 3 the dip tube 15 assigned.

With appropriate valve position of the check valves 25 and 31 according to the previously described Embodiment is in the emptying operation on the rotated fan 3 Suction air over the dip tube 15 in the cyclone separator or in the coarse dirt container 17 blown to emptying it by removing the collected coarse dirt through the discharge channel 21 in the filter bag 10 ,

6 shows an embodiment with an external, ie one for the vacuum cleaner 1 provided separate cleaning station 34 , This cleaning station 34 has a separate receptacle 35 Further, for example, receiving a receiving bag serving for disposal or the like.

For disposal of the in the coarse dirt container 17 Collected coarse dirt is the vacuum cleaner 1 the cleaning station 34 assigned, further docked to this so for example wired connected.

The vacuum cleaner 1 or the base unit 2 has according to the embodiments described above a between the suction mouth 8th leading flow channel 9 and the blower 3 connected cyclone separator 14 comprising a coarse dirt container 17 , The fan 3 is over the canal section 19 fluidically with the filter bag 10 connected.

The one with the opening 24 of the coarse dirt container 17 connected drainage channel 21 is guided in this embodiment to the outside, wherein the free end of the discharge channel 21 interface in the area of the device housing a discharge opening 36 ausformt. This is in the usual Staubsaugbetrieb, continue even when not operating the vacuum cleaner by a flap 37 locked. A the dip tube 15 from the blower 3 in the emptying operation separating switching valve 37 connects in the emptying operation the dip tube 15 with an outwardly directed intake duct 28 , Which likewise has the same interface, for example, in the region of the housing wall, a suction opening 29 having.

In the docking position - in 6 shown schematically - are preferably the vacuum cleaner side intake 28 but in any case the drainage channel 21 in the region of the outwardly guided openings sealingly connected to corresponding channel sections of the cleaning station 34 , For this purpose, this first has an emptying channel 21 in the cleaning station 34 extending entry channel 38 on. This opens, although not shown in detail, facing the receptacle 35 Furthermore, the coarse dirt separation preferably also with respect to the receptacle 35 achieved in the manner of a cyclone separation.

The vacuum cleaner side intake duct 28 is station-side transferred into a blower channel 39 ,

In the illustrated embodiment, the for blowing out the coarse dirt particles from the coarse dirt container 17 required suction air from a separate, in the cleaning station 34 recorded blower 40 built up. Accordingly, the cleaning station 34 via a separate power supply.

The blow channel 39 is pale side of the blower 40 connected to this. Suction side leads from the blower 40 an open to the environment intake 41 ,

The air freed of coarse dirt blows freely through a discharge grille 42 in the area.

According to the above-described embodiment is for emptying the coarse dirt container 17 not the vacuum cleaner side blower 3 used. Rather, the emptying takes place in a non-operating position of the vacuum cleaner, for example in a parking position, which further, for example, offers in so-called vacuum robots, which at one to a previously described cleaning station 34 extended base station for charging the device-side accumulators docking.

Alternatively, also the vacuum cleaner side blower 3 for removing the coarse dirt container 17 in the external receptacle 35 be used, for example, by reversing the direction of the suction flow, for example, by turning the fan 3 180 ° according to the embodiment in the 4 and 5 , In this case, the suction air is through an open to the environment intake 28 as shown in 5 sucked and the coarse dirt air in the receptacle 35 the cleaning station 34 blown. A separate fan 40 in the cleaning station 34 can be omitted here, according further a separate power supply to the cleaning station 34 What the mobility of the cleaning station 34 elevated.

Next, the cleaning station 34 be designed so that in the course or offset in time to emptying the coarse dirt container 17 a transfer of the in the filter bag 10 contained particulate matter or further alterna tively a transfer of the filter bag 10 Total in the cleaning station 34 or in its receptacle 35 he follows.

The above-described embodiment with a separate cleaning station can more preferably be used in connection with self-propelled, self-propelled cleaners tion equipment, so-called suction or sweeping robots, which are provided with a coarse dirt separator of the type described.

A fourth embodiment is based on 7 to 10 explained in more detail. The 7 shows a vacuum cleaner 1 based on the embodiment according to 2 , but here is the vacuum cleaner 1 by means of a slider 43 be switched by the vacuum cleaning operation in the discharge operation and vice versa. For this purpose, the suction or blowing lines are spatially combined in a region so that a slider, preferably a single slide 43 at the same time all lines penetrated. At least in the direction of movement of the slider 43 seen the lines are in this area next to and / or on top of each other.

The slider 43 replaced in the illustrated embodiment, the switching valves 26 and 27 in the 2 and 3 illustrated first embodiment. Here, the slider is formed as an elongated flat body, for example in the form of a plastic plate, which sliding 43 in the longitudinal extension of the same considered two spaced-apart openings 44 and 45 having. These openings 44 and 45 lie further in a sliding displacement direction r of the slider 43 one behind the other, with the distance between the openings 44 and 45 in the direction of displacement corresponds approximately to 1.2 times an opening diameter. As a result, between the openings 44 and 45 a closure section 46 educated. Such a closure portion is also each end of the slider 43 - Considered in the direction of displacement r - provided (reference numeral 46 and 46 '' ), so every opening 44 and 45 in displacement direction of the slide 43 considered from a closure section 46 respectively. 46 ' or 46 '' flanked.

The diameter of the openings 44 and 45 is adapted to the diameter of the slide 43 guided suction or blowing lines, here adapted to the cross sections of flow channel 30 , Canal section 19 , Channel section of the dip tube 15 as well as the intake duct 28 , so that sets in a slide-open position, a favorable flow through the air flow. The slider 43 facing end portions of the off or aufzuschiebernden channel sections are corresponding to the arrangement of openings and closure portions in the slide 43 provided in juxtaposition such that depending on the slide position, the free channel ends in coverage are either to an opening 44 or 45 or to a closure section 46 to 46 '' ,

With reference to the slider 43 are opposite to the slide 43 guided channels 15 . 19 . 28 and 30 two channels merged. So open in the illustrated embodiment, the channel of the dip tube 15 and the intake channel 28 in one of the suction side of the blower 3 associated intake passage section 47 while the channel section 19 and the flow channel 30 are merged into one of the blast side of the blower 3 associated exhaust duct section 48 , By the arrangement of the channels and the above-described embodiment of the slider 43 is only one of the channels depending on the slide displacement position 15 . 28 with the intake passage section 47 and only one of the channels at a time 19 . 30 with the exhaust duct section 48 fluidly connected. The sliding shift of the slider 43 takes place, for example, manually controlled by the user, including what may further be provided for example on the vacuum cleaner housing a freely accessible sliding handle. In a preferred embodiment, the sliding displacement of the slide takes place 43 via mechanical or electrical adjusting means.

The bottom opening 24 of the coarse dirt container 17 is in this embodiment by a flap 54 closed, which is hinged and hinged so that it opens automatically only in a flow direction, namely in the emptying operation according to 8th , Further, in the illustrated embodiment, the flow channel inlet opening 32 closing flap 33 hinged so that this only in Staubsaubetrieb according to 7 opens and in emptying mode according to 8th through the over the flow channel 30 is forced into the cyclone separator entering air flow in the closed position.

The operation of the fourth embodiment is explained in more detail below. Starting from the 7 is the vacuum cleaner 1 in the vacuuming operation, with the slider 3 is in an embodiment lower, preferably stop limited end position (see also 9 ). In this position, the slider 43 with its openings 44 and 45 the channel section 19 and the channel section with the dip tube 15 free, passing through the closure section 46 and 46 '' the flow channel 30 and the intake channel 28 are blocked, further closed flow-tight. Accordingly, the channel portion of the dip tube 15 with the intake passage section 47 of the blower 3 and the channel section 19 with the exhaust duct section 48 fluidly and tightly connected to the environment. After coarse dirt separation in the cyclone separator, the suction air flow b, which is only mixed with fine dust, is transferred via the immersion pipe 15 and the intake passage section 47 through the blower 3 aspirated and continue on the blow-out duct section 48 and the channel connected thereto fluidly 19 in the filter bag 10 directed. The coarse dirt settles, as well already in the above-described embodiments, in the coarse dirt container 17 from.

For the emptying operation is the slide 43 shifted in the stop limit in the embodiment upper limit position (see. 8th and 10 ). In this position, the slider 43 with its openings 44 and 45 the flow channel 30 and the intake channel 28 free, with the closure sections 46 and 46 ' the channel section 19 and the channel section of the dip tube 15 are blocked. To the coarse dirt from the coarse dirt container 17 in the filter bag 10 to convey is via the intake port 28 and the subsequent thereto by the corresponding slide switching position Ansaugkanalabschnitt 47 Ambient air sucked in and downstream of the blower 3 through the exhaust duct section 48 in the flow channel 30 blown, from which the blast air flow in the cyclone separator or the coarse dirt container 17 occurs, this continues under automatic opening of the bottom flap 54 according to Luftstrombeaufschlagung, so that the coarse dirt from the coarse dirt container 17 through the drainage channel 21 in the filter bag 10 is transported.

The arrangement of the openings in the slide are dependent on the arrangement of Kanalendabschnitte in the region of the slide. Thus, for example, the channel sections can be combined into a bundle, further in such a way that two channel sections are arranged in juxtaposition, with the channel section / pairs thus combined lying one above the other, more preferably such that the channel central axes are in a cross section connecting lines a rectangle, preferably a square. A slider to be assigned to such a channel arrangement 43 is in the 11 and 12 shown.

The slider 43 In this embodiment, transverse to the sliding displacement direction r, there are two rows of openings and closure portions, with first a row of two openings spaced apart in the sliding displacement direction r 43 and 44 between which there is a closing section 46 extends. This closure section 46 is another opening in the adjacent row 49 associated in the sliding displacement direction r of the slider 43 viewed on both sides (in the illustration top and bottom) flanked by closure sections 46 ' and 46 '' which are adjacent to the openings according to the above-described arrangement 43 and 44 the other row.

Each row of openings and closure sections of the slider 43 is assigned to a superimposed pair of channel sections, so on the row with the openings 43 and 44 the channel section 19 and the intake channel 28 while the second row with the opening 49 the flow channel 30 and the channel section of the dip tube 15 assigned.

In 11 is the slider 43 shifted so in a preferred stop limited position that the openings 44 and 49 the channel section of the dip tube 15 and the further channel section 19 are assigned and accordingly this fluidly with the intake and Ausblaskanalabschnitten 47 and 48 connect. Accordingly, the slider position in 11 the Staubsaugbetrieb ago, wherein means of the closure sections 46 and 46 ' the intake duct 28 and the flow channel 30 are sealed flow-tight.

For emptying the coarse dirt container 17 is also in this embodiment, the slider 43 stop limited shifted so that now the openings 45 and 49 the intake channel 28 and the flow channel 30 are assigned and this fluidly according to the intake and Ausbiaskanalabschnitten 47 and 48 connect while the closure sections 46 and 46 '' the channel section 19 and the channel section of the dip tube 15 seal tightly.

As based on the embodiment in the 4 and 5 is described, is a change from the vacuum cleaning operation in the discharge operation by a change of the flow direction, preferably due to a rotation of the fan 3 , allows. The 13 and 14 show in this context another embodiment in which the blower 3 is stationary, but the channels guided to this, in particular the terminal portions of the channels relative to the fixed fan 3 be reversed.

For this purpose, first is the blower 3 , in particular a surrounding in cross-section circular fan housing ring 51 provided that the connection areas of these led lines ( 19 . 28 . 15 . 30 ). The connection areas pass through the ring 51 such that the lines are freely directed radially onto the blower housing 50 lead.

The connection areas of the lines are in a cross section according to the illustrations in FIGS 13 and 14 evenly over the circumference of the ring 51 arranged distributed and attached to the ring, corresponding to the circumferentially adjacent connection areas form an angle of 90 °. It is further provided that the connection areas of the channel portion of the dip tube 15 and the channel section 19 are arranged diametrically opposite each other while around 90 ° to this offset the connection areas of the intake duct 28 and the flow channel 30 open diametrically opposite.

The blower housing 50 has diametrically opposite openings in cross section 52 and 53 on, which extend in the same cross-sectional plane as the terminal areas.

The the ring 51 supplied lines (channels and channel sections) are flexible, further example, tubular.

The ring 51 is around the blower housing 50 rotatable, this further about an axis which is transverse to the flow direction in the fan 3 , There are further preferred in this regard predefined rotational positions of the ring 51 provided, for example, according to overflowable locking means. Next can also be a rotation limit of the ring 51 be provided, so on a rotation limit of 90 °, so that a rotation of the ring 51 can only be achieved in clockwise and counterclockwise direction within a 90 ° range.

In 13 the ring position is shown in the vacuuming operation. The connection areas of the duct section of the dip tube 15 and the channel section 19 are fluid with the openings 52 and 53 of the blower housing 50 connected, so that accordingly the dip tube 15 the suction side of the blower 3 and the channel section 19 the blast side of the blower 3 assigned. The intake channel 28 as well as the flow channel 30 are by appropriate assignment of a wall portion of the blower housing 50 closed under closure of the corresponding connection area of the channels.

For the emptying operation, the ring 51 with reference to the illustrations rotated in the clockwise direction by 90 °, so that hereafter the connection areas of the channel section 19 and the dip tube 15 are closed while the connection areas of the intake duct 28 and the flow channel 30 fluidly connected to the blower housing side openings 52 and 53 , Accordingly, via the intake passage 28 Ambient air sucked in and over the flow channel 30 in the coarse dirt container 17 blown to blow out the coarse dirt collected therein.

Also the twisting of the ring 51 to change the operating conditions can be done manually by the user. Alternatively, a mechanical, such as electromechanical rotation of the ring 51 possible, this further, if necessary, depending on predetermined parameters automatically.

In the above-described embodiment, the ring acts 51 valvelike. The changeover from vacuum cleaning mode to emptying mode takes place by actively switching only one element - here the ring 51 - So that - as well as in the embodiment according to the 7 to 12 - A compact design is achievable.

Based on 16 to 19 a sixth embodiment is described below. According to the embodiment according to 6 also has the filter bag 10 only one entrance opening 12 with a single flap 20 on, which is dimensioned so that the coarse dirt through this inlet opening 12 in the filter bag 10 can be spent. Furthermore, the vacuum cleaner points 1 a fan 3 and a coarse dirt separator 14 on.

The coarse dirt separator 14 initially has a circular cylindrical body. In this main body are two parallel cylindrical, further parallel to a main body central axis extending cylindrical, tubular chambers 54 and 54 ' added. The two chambers 54 and 54 ' are - as in 18 to recognize - arranged on an axis of symmetry of the circular contour of the body, further on both sides of the main body central axis.

The two chambers 54 and 54 ' enforce each end a disc-shaped ceiling 55 respectively. 55 ' of the main body, so that in the ceilings 55 and 55 ' adjust according to inlet and outlet openings.

These openings are fluidly sealed to those in the vacuum cleaner 1 laid suction and blowing lines. So flows in the operating position according to 16 on the inlet side of the chamber 54 that of the attachment 7 upcoming flow channel 9 and in the region of the opposite direction of the opening of the chamber 54 an intermediate channel 56 , the other end on the suction side of the blower 3 connected. Another intermediate channel 57 leads from the blast side of the blower 3 to an opening of the other chamber 54 ' which opening in the same ceiling 55 ' is formed as the opening of the chamber 54 , which is in communication with the intermediate channel 56 ,

The opening of the chamber 54 ' in the opposite direction of the ceiling 55 is connected to a dust filter bag 10 leading channel section 19 ,

Every chamber 54 . 54 ' is with a Grobgutsieb 58 Mistake. This can be a metal or plastic sieve, with a size adapted to the separating dirt particles Mesh size. It may be a flat screen member, which has the free inner cross section of the respective chambers 54 . 54 ' interspersed.

Shown are in the embodiment according to the 16 to 19 Grobgutsiebe 58 which each initially have a radially outer stiffened portion which extends perpendicularly or nearly perpendicularly from the chamber inner wall to the chamber center and thereafter falls steeply under the entry of an acute angle to the chamber axis and so a collecting reservoir 59 forms. This collection reservoir 59 of the chambers 54 and 54 ' are directed in the flow direction, further in the longitudinal extension of the chambers 54 and 54 ' considered centered.

The coarse dirt separator 14 or the main body are about the main body central axis receiving axis of rotation 60 rotatable through an angle of 180 °, leaving the chamber 54 after a corresponding rotation of the intermediate channel 57 and the channel section 19 is assigned while the chamber 54 ' the fluid connection between the flow channel 9 and the blower 3 leading intermediate channel 56 forms. Thus, depending on the rotational position of the body each chamber 54 and 54 ' either intake air or blasluftbeaufschlagt.

According to the arrangement of the chambers 54 and 54 ' in conjunction with the incoming and outgoing air lines arise during operation of the vacuum cleaner 1 in the chambers 54 and 54 ' Air flows that are directed opposite to each other, wherein further each chamber 55 . 54 ' is traversed by an air flow, the total of the attachment 7 via a first chamber of the coarse dirt separator 14 , the blower 3 , the second chamber of the coarse dirt separator 14 towards the dust filter bag 10 leads. The coarse dirt separation takes place here in the flow direction in front of the blower 3 while behind the blower 3 Guided blown air blows the non-filter-active chamber in the opposite flow direction to the filling flow direction and so the coarse dirt in the dust filter bag 10 discharges. The emptying process of a chamber is accompanied by the vacuuming in conjunction with a coarse filtration in the other chamber, the blown coarse material directly into the dust filter bag 10 is rinsed without the blower 3 or the blower 3 driving engine to pass.

After a rotation of the coarse dirt separator 14 or of the main body about the axis of rotation 60 180 °, the chambers 54 and 54 ' reversed in their assignment to the supplied lines, so that the emptied before the rotation of coarse dirt chamber 54 ' now the line section on the suction side of the blower 3 is assigned and in the suction operation of the coarse filtration, while the serving before the rotation of the coarse filtration chamber 54 now in the blasseitigen line section behind the blower 3 is positioned for blowing out and corresponding spaces of collected coarse dirt.

The chambers 54 and 54 ' can during the operation of the vacuum cleaner 1 or even after the operation of the vacuum cleaner 1 be rotated and thus exchanged. Also, the rotation of the coarse dirt separator 14 around the axis of rotation 60 be controlled by a pressure sensor, which causes the rotation, for example, at the onset of pressure loss by too much filtered coarse material in the screen. This in turn is preferably brought about mechanically, for example further electromechanically, but can also be achieved manually by user intervention. More preferably, the rotational positions are defined, for example by overflowable locking devices. In addition, the proper assignment of the chambers 54 and 54 ' to be connected to the line sections to be monitored by a sensor, the one in operation of the vacuum cleaner 1 only in one of the two 180 ° rotary positions of the coarse dirt separator 14 allows.

Is the rotation of the coarse dirt separator 14 during operation of the vacuum cleaner 1 is briefly interrupted during the rotation of the suction air flow, since the body with its ceilings 55 and 55 ' during rotation closes the facing terminal portions of the channels. This prevents uncontrolled dirt in the base unit 2 occurs.

In the proposed embodiment of Grobgutsiebes 58 (see also 19 ) collects the coarse dirt in the central collection reservoir 59 , While the suction air preferably predominantly through the radially outer, annular region of the Grobgutsiebes 58 flows. The collection reservoir 59 takes up about half the axial length of the chamber 54 respectively. 54 ' one.

The Grobgutsieb 58 is more preferably designed flexible, in particular the area of the collecting reservoir 59 , The Grobgutsieb 58 , in particular the collecting reservoir 59 flows here with the air flow. If the tube is rotated by 180 °, the Grobgutsieb 58 with the now in the opposite direction running air flow in the chamber turned over. Particles which have become lodged in the mesh are transformed by the turning over of the coarse sieve 58 and remove the resulting mesh widening and into the filter bag 10 transported. The sieve is accordingly self-cleaning. By the arrangement of the Grobgutsiebes 58 centered with respect to the longitudinal extent of a chamber is a turnover of Grobgutsiebes 58 when changing the direction of air flow within the chamber allows.

Is the Grobgutsieb 58 stiff or less flexible, so that no turning of the same is achieved at air flow direction change, this can, in particular the collecting reservoir 59 occupy at least approximately the entire length of the associated chamber, whereby the air flowing through over the entire length can flow past the edge of the chamber, wherein the dirt over the entire length of the chamber in the collection reservoir 59 is collected.

The 20 and 21 show a further development of the above-described embodiment of the coarse material separator 14 , Wherein the entire cross section of the cylindrical base body for the chambers 54 and 54 ' is exploited. Thus, the two chambers 54 and 54 ' each having a semicircular cross section, wherein the circular section outer wall at the same time forms the wall of the body, from which inside a cross section along a diameter line a partition wall 61 is arranged to separate the chambers 54 and 54 ' , The partition 61 In addition, the central axis of the main body, the axis of rotation, also receives the center accordingly 60 on.

Like the previously described embodiment are in the longitudinal extension of the chambers 54 and 54 ' Grobgutsiebe 58 provided, the wall inside of the chambers are fixed and extend over the entire cross-section of the respective chamber. Due to the semicircular in cross section design of the chambers 54 and 54 ' is achieved compared to the above-described embodiment, the same outer diameter of the base body enlarged compared to the above solution filter cross-sectional area.

Is shown in 21 one flexible Grobgutsieb each 58 , which can change with change of the air flow direction.

To the flow speed at Grobgutsieb 58 is further reduced according to the embodiment in 22 suggested that the Grobgutsieb 58 receiving chambers 54 respectively. 54 ' , in particular in the scope of Grobgutsiebes 58 to give a bulbous shape. That's how every chamber is 54 . 54 ' starting from the ones in the ceilings 55 and 55 ' provided openings shaped like a tube with a circular cross-section, this starting from the ceiling 55 respectively. 55 ' over a quarter of the total axial length of the chamber. The remaining, over half the axial length of the chamber extending center section 62 the respective chamber extends in a longitudinal section, starting from the facing ends of the end-side pipe sections of the chambers 22 convex, so that in the immediate impact area on the Grobgutsieb 58 gives a cross-sectional enlargement of the chambers. As a result, the impact velocities of the coarse material Grobgutsieb 58 reduced, this further enlarging the screen cross-sectional area. Pressure losses are minimized, whereby more coarse material can be deposited in comparison to a cross-section of equal length over the axial length.

Also, more than two chambers may be arranged in the body, such as in the 23 and 24 illustrated embodiment, three chambers 54 . 54 ' and 54 '' , The arrangement is chosen so that in a cross section and in a plan view according to 23 Lines connecting the chambers center axes form an equilateral triangle. The chamber center axes are parallel to the axis of rotation 60 of the basic body 52 , wherein further the center axes on a concentric to the axis of rotation 60 extending circle line are positioned.

In conjunction with a conduit arrangement according to the embodiment in the 14 and 16 are two of the chambers 54 . 54 ' and 54 '' during operation of the vacuum cleaner 1 active, are flowed through correspondingly in opposite directions, wherein in a chamber, as described, a coarse dirt filtration takes place while the other active chamber is blasluftbeaufschlagt emptied. The third chamber is not flowed through, is accordingly not in use until the main body or the coarse dirt 14 around the axis of rotation 60 is rotated by 120 °. After this rotation, the third chamber and one of the other two chambers are in use. Will the coarse dirt separator 14 rotated three times by 120 °, the starting position is reached again.

The non-active and accordingly not air-flow chamber is always the chamber, which before a 120 ° rotation of the coarse dirt separator 14 the coarse filtration is used. This offers the advantage that prior to a further rotation, after which the chamber is retracted in the blown air stream for the removal of coarse dirt particles, a screening of the filtered content in the chamber is made possible. So unintentionally sucked objects can still be removed. These are in the Grobgutsieb 58 caught in the non-active chamber and can be removed from the coarse material.

For this purpose, the vacuum cleaner housing preferably has a reversion opening which does not overlap the cover-side opening active chamber.

The 25 and 26 show one in the embodiment according to in 23 and 24 based alternative with three chambers 54 . 54 ' and 54 '' according to the embodiment according to the 20 and 21 take advantage of the entire cross section of the circular cylindrical body. This offers the advantage of a larger Grobgutsiebes 58 , which can accommodate more coarse material until it has to be emptied. Accordingly, the chambers take 54 to 54 '' each about one third of the cross section of the body. The mode of action corresponds to the previously described embodiment.

Finally shows 27 an embodiment are based on the embodiment according to the 25 and 26 in which the chambers 54 . 54 ' and 54 '' are formed separately from each other, corresponding to each have independent walls. These chambers 54 . 54 ' and 54 '' are in a base frame 63 taken, which is the central axis of rotation 60 and each end of the axis of rotation 60 circular ceilings 64 having. The latter each have passage openings 65 , Which are aligned in cross section of the chambers receiving in vertical overlap to the free inner cross section of the chambers.

The chambers 54 . 54 ' and 54 '' are from the coarse particle separator designed in this way 14 removable, this preferably by pulling radially outward, whereby a drawer-like removal of the non-active chamber can be achieved. According to this embodiment, the user can conveniently examine the previously sucked coarse dirt, for example, after accidentally sucked objects.

To remove the drawer-like chambers from the coarse dirt separator 14 or from the main body frame 63 To simplify, each outer wall of the circular section lateral surface is a handle 66 intended.

To hold the drawer-like chambers in the body frame 63 triggerable means are provided, such as overflowable locking devices.

In order to access the non-active, drawer-like chamber is preferred in the base unit 2 a flap or the like. Provided. Alternatively, this is the base unit 2 designed so that a direct access to the respective drawer-like chamber is possible.

All disclosed features are (for itself) essential to the invention. In the disclosure of the application will hereby also the disclosure content of the attached attached priority documents (Copy of the advance notice) fully included, too for the purpose, features of these documents in claims present Registration with.

1

vacuum cleaner

2

basic unit

3

Suction / blower unit

4

electric cable

5

stalk

6

operating handle

7

header

8th

saugmund

9

flow channel

10

filter bag

11

Retaining plate

12

inlet opening

13

protective covering

14

coarse sediment bowl

15

dip tube

16

free The End

17

Bulk waste container

18

scree

19

channel section

20

flap

21

drain channel

22

inlet opening

23

flap

24

opening

25

check valve

26

switching valve

27

switching valve

28

intake port

29

suction

30

flow-through

31

check valve

32

Flow channel inlet opening

33

flap

34

cleaning station

35

receptacle

36

emptying opening

37

flap

38

inlet channel

39

blow

40

fan

41

intake port

42

exhaust grille

43

pusher

44

opening

45

opening

46

closure portion

46 '

closure portion

46 ''

closure portion

47

intake channel

48

Ausblaskanalabschnitt

49

opening

50

fan housing

51

ring

52

opening

53

opening

54

chamber

54 '

chamber

54 ''

chamber

55

blanket

55 '

blanket

56

intermediate channel

57

intermediate channel

58

Grobgutsieb

59

collection reservoir

60

axis of rotation

61

partition wall

62

mid section

63

Main body frame

64

blanket

65

Through opening

66

handle

a

Discharge

b

suction air

r

Sliding displacement direction

T

parting plane

Claims (26)

Method for operating a vacuum cleaner ( 1 ) with an electric motor-driven blower ( 3 ) and a suction mouth ( 8th through which is sucked, wherein the suction air stream (b) by a coarse dirt separator ( 14 ) with assigned coarse dirt container ( 17 ), characterized in that the from the coarse dirt separator ( 14 ) exiting suction air for the separation of fine dust contained therein in a filter bag ( 10 ) is blown. A method according to claim 1 or in particular according thereto, characterized in that for emptying the coarse dirt container ( 17 ) Suction air through the coarse dirt container ( 17 ) is blown and thus discharged coarse dirt into the filter bag ( 10 ) is entered. Method according to one or more of the preceding claims or in particular according thereto, characterized in that the injection of suction air into the coarse dirt container ( 17 ) by means of a reversal of the direction of rotation of the blower ( 3 ) is made. Method according to one or more of the preceding claims or in particular according thereto, characterized in that a cleaning station ( 34 ), that the vacuum cleaner ( 1 ) for emptying the coarse dirt container ( 17 ) to the cleaning station ( 34 ) and the coarse dirt by means of the in the coarse dirt container ( 17 ) introduced suction air into a receptacle ( 35 ) in the cleaning station ( 34 ) is transported. Method according to one or more of the preceding claims or in particular according thereto, characterized in that after connection of the vacuum cleaner ( 1 ) to the cleaning station ( 34 ) the filter bag ( 10 ) or in the filter bag ( 10 ) contained in the cleaning station ( 34 ) is transferred. Movable vacuum cleaner with an electric motor blower ( 3 ) and one of a suction air stream (b) interspersed filter bag ( 10 ), whereby the suction air flow (b) through the blower ( 3 ), characterized in that the suction air stream (b) before entering the filter bag ( 10 ) a coarse dirt separator ( 14 ) with an associated coarse dirt container ( 17 ) interspersed. Vacuum-cleaning device according to claim 6 or in particular according thereto, characterized in that the coarse dirt separator ( 14 ) for emptying in the reverse direction of the suction air flow (b) is enforceable. Vacuum cleaning device according to one or more of claims 6 to 7 or in particular according thereto, characterized in that the suction air flow (b) the blower driven by the electric motor ( 3 ) after leaving the coarse dirt separator ( 14 ) and before entering the filter bag ( 10 ) interspersed. Vacuum cleaning device according to one or more of claims 6 to 8 or in particular according thereto, characterized in that the suction air flow (b) during emptying of the coarse dirt separator ( 14 ) in a filter bag ( 10 ). Vacuum cleaning device according to one or more of claims 6 to 9 or in particular according thereto, characterized in that the suction air flow (b) during the emptying of the coarse dirt separator ( 14 ) in the same filter bag ( 10 ), in which this also when filling the coarse dirt separator ( 14 ). Vacuum cleaner according to one or more of claims 6 to 10 or in particular according thereto, characterized in that the filter bag ( 10 ) two inlet openings ( 12 . 22 ), on the one hand to the entry of fine dust and on the other to the entry of, in the coarse dirt separator ( 14 ) separated coarse dirt. Vacuuming device according to one or more of claims 6 to 11 or in particular according thereto, characterized in that for emptying the coarse dirt container ( 17 ) a separate, the blower ( 3 ) upstream intake opening ( 29 ) is provided. Vacuuming device according to one or more of claims 6 to 12 or in particular according thereto, characterized in that the separate intake opening ( 29 ) downstream of the coarse dirt separator ( 14 ) is provided. Vacuum-cleaning device according to one or more of claims 6 to 13 or in particular according thereto, characterized in that the emptying of the coarse dirt container ( 17 ) by means of a change of the direction of rotation of the blower ( 3 ) he follows. Vacuum-cleaning device according to one or more of claims 6 to 14 or in particular according thereto, characterized in that the emptying of the coarse dirt container ( 17 ) by means of a permutation of the connection areas relative to a stationary fan ( 3 ) he follows. Vacuum cleaner according to one or more of claims 6 to 15 or in particular according thereto, characterized in that the suction mouth ( 8th ) of the dust suction device to the coarse dirt separator ( 14 ) leading suction line can be shut off. Vacuum cleaner according to one or more of claims 6 to 16 or in particular according thereto, characterized in that the blower ( 3 ) to the filter bag ( 10 ) leading line a switching valve ( 27 ), for the return of the suction air stream (b) in the cyclone separator ( 14 ). Vacuum cleaner according to one or more of claims 6 to 17 or in particular according thereto, characterized in that the blower ( 3 ) to the filter bag ( 10 ) leading line a switching valve ( 27 ), for connection to one of the suction mouth ( 8th ) separate intake opening ( 29 ). Vacuum-cleaning device according to one or more of claims 6 to 18 or in particular according thereto, characterized in that the coarse dirt container ( 17 ) is rotatable for emptying. Vacuum-cleaning device according to one or more of claims 6 to 19 or in particular according thereto, characterized in that the coarse dirt container ( 17 ) two or more chambers ( 54 . 54 ' . 54 '' ), which by turning the coarse dirt container ( 17 ) With a first and second air flow can be flowed through, wherein the air flows are directed opposite to each other. Vacuum-cleaning device according to one or more of claims 6 to 20 or in particular according thereto, characterized in that one of the chambers ( 55 . 54 ' . 54 '' ) from the coarse dirt container ( 17 ) is removable. Vacuum-cleaning device according to one or more of claims 6 to 21 or in particular according thereto, characterized in that a chamber ( 54 . 54 ' . 54 '' ) can not be flowed through in a removal position, while at least two further chambers ( 54 . 54 ' . 54 '' ) are designed to the air flow in mutually opposite directions. Vacuum-cleaning device according to one or more of claims 6 to 22 or in particular according thereto, characterized in that the coarse dirt container ( 17 ) about an axis ( 60 ), which corresponds to the flow direction, is rotatable. Vacuum-cleaning device according to one or more of claims 6 to 23 or in particular according thereto, characterized in that the emptying of the coarse dirt container ( 17 ) in one of the filter bag ( 10 ) separate receptacle ( 35 ) he follows. Vacuum cleaning device according to one or more of claims 6 to 24 or in particular according thereto, characterized in that the emptying by a switchable, second blower ( 40 ) he follows. Vacuum-cleaning device according to one or more of claims 6 to 25 or in particular according thereto, characterized in that the dust-suction device has a stationary cleaning station (cf. 34 ) is arranged to, to which the dust suction device is connected, for emptying the coarse dirt container ( 17 ) and / or the filter bag ( 10 ).