DE102016118806A1 - Vacuum cleaner as well as system of a vacuum cleaner and a base station - Google Patents

Abstract

The invention relates to a vacuum cleaner (1), in particular hand-guided vacuum cleaner, with a filter chamber (2) and a blower (3), wherein the filter chamber (2) based on a suction operation of the vacuum cleaner (1) for conveying suction material from a surface to be cleaned in the filter chamber (2) with the fan (3) is connected, and wherein the filter chamber (2) based on a regeneration operation for emptying the filter chamber (2) with a collecting space (9) is connectable. In order to provide a vacuum cleaner (1) which allows optimal regeneration of the filter chamber (2), it is proposed that the filter chamber (2) be viewed in a discharge direction (r), in particular between one between the filter chamber (2) and the blower (2). 3) arranged filter (4) and one with the collecting space (9) connectable emptying opening (6), substantially constant or increasing cross-sectional areas (11, 12, 13), wherein in the emptying direction (r) first cross-sectional area (11, 12 , 13) perpendicular to the emptying direction (r) does not protrude or not more than 5 mm beyond a second cross-sectional area (11, 12, 13) lying in the emptying direction (r) behind the first cross-sectional area (11, 12, 13). Moreover, the invention relates to a system comprising a vacuum cleaner (1) and a base station (8) and a method for operating a vacuum cleaner (1).

Description

Field of engineering

The invention relates to a vacuum cleaner, in particular a hand-held Akkusauger, with a filter chamber and a fan, wherein the filter chamber is related to a suction of the vacuum cleaner for conveying suction material from a surface to be cleaned in the filter chamber connected to the fan, and wherein the filter chamber related is connectable to a regeneration operation for emptying the filter chamber with a collecting space.

Furthermore, the invention relates to a system comprising such a vacuum cleaner and a base station with a collecting space for receiving the suction material contained in the filter chamber of the vacuum cleaner during a regeneration operation.

Finally, the invention also relates to a method for operating a vacuum cleaner, being conveyed during a suction suction material by means of a blower of the vacuum cleaner from a surface to be cleaned in a filter chamber of the vacuum cleaner, and wherein during a regeneration operation, the suction material contained in the filter chamber in one of the Vacuum cleaner connected collecting space, in particular a collecting space of a base station, is promoted.

State of the art

Vacuum cleaners and base stations of the aforementioned type are known in the art. The vacuum cleaners usually have a filter chamber with a so-called permanent filter, which is not replaced when fully occupied with suction material, but is freed by means of a usual suction direction opposite air flow of suction material. For this purpose, the vacuum cleaner is usually connected to the base station, wherein the blower of the vacuum cleaner or an external fan, such as a blower of the base station is used to promote in the filter room existing suction material in the base station.

The publication EP 12 43 218 B1 discloses, for example, a vacuum cleaner and a base station for cleaning a filter room of the vacuum cleaner, in which the filter room is emptied by means of a blower of the base station. The filter chamber is connected for this purpose via a suction line to a disposed between the filter chamber and the blower disposal container. The suction line has, perpendicular to its longitudinal extent, a cross-sectional area which is significantly smaller than a cross-sectional area of the filter space.

The publication WO 00/54644 A1 discloses, for example, a vacuum cleaner with a base station, in which the suction material collected in the filter chamber is blown into the base station. The filter chamber tapers in the discharge direction to a collecting space, so that the suction material must overcome a decreasing cross-sectional area between the filter chamber and the collecting space during the regeneration of the filter chamber.

A disadvantage in both cases is that the suction material conveyed in the emptying direction has to overcome tapering cross-sectional areas, whereby pieces of suction material can become wedged in front of an emptying opening of the filter space and cause blockage, whereby the regeneration is hindered or even made impossible.

It is therefore an object of the invention to provide a vacuum cleaner which allows optimal regeneration of the filter chamber.

Summary of the invention

To achieve the above object, the invention proposes that the filter chamber considered in a discharge direction, in particular between an arranged between the filter chamber and the fan filter and connectable to the collection chamber discharge opening, has substantially constant or increasing cross-sectional areas, with one in the discharge direction first cross-sectional area perpendicular to the emptying direction does not protrude or not more than 5 mm beyond a lying in the emptying direction behind the first cross-sectional area second cross-sectional area.

The core of the invention is thus to design the filter chamber including the discharge opening in such a way that it expands substantially in the discharge direction. This causes the filter chamber viewed in the discharge direction has no rejuvenations, which suction material can get stuck in the promotion of the filter through the discharge opening in the direction of the collecting space, which could lead to incomplete regeneration of the filter chamber or at worst to a blockage of the Filter room, especially the discharge opening, which would make a regeneration impossible. According to the invention, the cross-sectional areas along the longitudinal extent of the filter space are thus substantially constant or even increase. In addition, a cross-sectional area, which first flows through the suction material in the direction of discharge, does not project beyond or not more than 5 mm beyond a cross-sectional area arranged behind it. Thus, not only do the sizes of the cross-sectional areas correspond, but the filter chamber is additionally designed in such a way that the cross-sectional areas either not at all or only minimally, ie less than 5 mm perpendicular to the emptying direction overlap. For example, embodiments are also encompassed in which the cross-sectional areas are constant or increase in the discharge direction, but because of different cross-sectional shapes, one of the cross-sectional areas in one sub-area projects beyond another cross-sectional area, so that minimal deposition surfaces for the conveyed suction material arise in the emptying direction. With regard to the constant or increasing cross-sectional area, the expression "substantially" means that a slight taper of the filter space in the direction of discharge is permissible in the sense of the invention. However, this taper is so small, and preferably in the emptying steadily, that no regeneration appreciably affecting accumulation surfaces for the suction material arise. Overall, the filter chamber according to the invention is thus designed so that even in a case in which the filter chamber is filled with a contiguous accumulation of suction material, the suction material can be optimally discharged into the collecting space.

In particular, it is proposed that the filter chamber in an emptying direction has a substantially constant or increasing cross-sectional area behind a filter arranged between the filter chamber and the fan, wherein a first cross-sectional area perpendicular to the emptying direction in the emptying direction is not or not more than 5 mm above a viewed in the emptying direction beyond the first cross-sectional area lying further cross-sectional area protrudes.

Furthermore, it is proposed that the boundary surfaces defining the cross-sectional areas do not intersect in the direction of discharge. This ensures that a first arranged in the emptying direction cross-sectional area within the perimeter, d. H. Contour, lies in the emptying behind the cross-sectional area. This is achieved particularly simply by virtue of the fact that the filter chamber has a constant cross-sectional area and cross-sectional shape over its entire longitudinal extent or, inter alia, also due to the fact that the filter space continuously widens. The expansion can be continuous or unsteady, d. H. stepped. Of importance is only that no accumulation surfaces arise for the suction material flowing in the emptying direction. These include, for example, subregions of a wall of the filter chamber, which are not perpendicular to the emptying direction, but for example at a 45 degree angle to it.

In addition, it is proposed that the cross-sectional areas of the filter, the filter chamber and / or the discharge opening have a corresponding geometric shape. The geometric shape of the cross-sectional areas of the filter chamber is basically not alone decisive for the success of the regeneration of the filter chamber. The geometric shape may thus be, for example, a circular shape, a triangular shape, a quadrangular shape or the like. However, it is recommended that the cross-sectional areas of the filter and / or the filter space and / or the discharge opening correspond to one another in such a way that there are no undercuts on the filter, in the filter space or at the discharge opening in the discharge direction. It is also possible that, for example, the geometric shape of a cross-sectional area of the filter is other than the geometric shape of a cross-sectional area of the filter chamber, so that the filter may have, for example, a circular cross-sectional area, while the filter chamber has a quadrangular cross-sectional area without it an overlapping of the circumferential lines comes.

It is proposed that the filter is a backwashable filter with a clean air space separating from the filter chamber filter element, which is traversed during the suction of air to be cleaned from the direction of the filter chamber in the direction of the clean air space and during the regeneration operation of purge air from the direction of the clean air space in Flowed through the direction of the filter chamber. Such a backwashable filter is preferably cylindrical and is flowed through during the suction operation from outside to inside, so that suction material contained in the air flow on the outer wall of the filter, in particular the filter element, is deposited and not through the filter element into the interior of the cylindrical filter, namely in the clean air room, can get. Furthermore, the backwashable filter can also have a substantially conical shape, which tapers off from the fan in the direction of the filter chamber, so that optimum separation of the suction material from the outside of the filter or filter element through the filter chamber is possible.

Furthermore, it is proposed that the filter has a cleaning element for backwashing the filter element, which cleaning element is at least partially disposed in a limited by the filter portion of the clean air space, and wherein the cleaning element is formed, attached to the filter chamber facing side of the filter element suctioned suction to solve. The cleaning element may, for example, be a rotating air nozzle which rotates in the portion of the clean air space delimited by the filter and, in the process, the filter element with purging air acted upon, which passes through the filter from the inside out and thereby replaces deposited on the outer wall of the filter suction material. Preferably, the cleaning element rotates about a longitudinal axis of the filter, so that a peripheral surface of the filter can be cleaned homogeneously. The shape of the cleaning element is advantageously adapted to the shape of the filter, wherein, for example, both the filter and the cleaning element may have a cylindrical shape or truncated cone shape. During the suction operation of the vacuum cleaner sucked air is sucked in from the outside in through the filter element, wherein the suction material is collected on the outer wall of the filter element and only purified air can penetrate into the filter. The cleaned air passes between the inner wall of the filter and the outer wall of the cleaning element to the blower of the vacuum cleaner. For a regeneration operation of the vacuum cleaner, the air path within the clean air space is switched so that outgoing from the fan or a secondary air inlet purge air can only get into the cleaning element and flows from this, for example via nozzles, on the inner wall of the filter element. The purging air passes through the filter from the inside to the outside and dissolves on the outer wall of the filter deposited suction material.

Furthermore, a vacuum cleaner with a filter chamber and a fan is proposed, wherein the filter chamber is related to a suction operation of the vacuum cleaner for conveying suction material from a surface to be cleaned in the filter chamber with the fan, and wherein the filter chamber based on a regeneration operation for emptying the filter space is connectable to a collecting space, wherein the filter space is formed in a longitudinal section in the direction of a main flow direction through the filter space so that the filter space is interspersed during a regeneration operation in the main flow direction or converging thereto. In particular, the filter space and / or the filter in the regeneration direction of the air flow on no undercut, on which could be deposited waste product.

In addition to the vacuum cleaner described above, the invention also proposes a system comprising such a vacuum cleaner and a base station with a collecting space for receiving the suction material contained in the filter chamber of the vacuum cleaner during a regeneration operation, which base station for holding the vacuum cleaner, in particular for connecting the discharge opening is formed with a corresponding collecting chamber opening of the collecting space, that the discharge direction during a regeneration operation of the vacuum cleaner is substantially parallel to the gravitational force. According to the vacuum cleaner and the base station are thus formed corresponding to each other so that the vacuum cleaner is spatially oriented in arranged at the base station state that the emptying direction of the filter chamber is parallel to the gravitational force and the gravitational force supports the regeneration of the filter chamber. As a result, a portion of the suction material alone may fall from the filter chamber into the collecting space of the base station due to the gravitational force acting on the suction material, so that the fan used for the regeneration may optionally be operated at a lower power level. An optimal cleaning is thus possible with less effort. The collecting space of the base station may be, for example, a replaceable filter bag or a rigid container. In principle, it may also be a cyclone filter or the like. The invention remains unaffected.

In addition to the previously described vacuum cleaner and the system of a vacuum cleaner and a base station, a method for operating a vacuum cleaner, in particular a handheld Akkusaugers, also proposed, wherein during a suction suction product by means of a blower of the vacuum cleaner from a surface to be cleaned in a filter chamber of the vacuum cleaner wherein during a regeneration operation, the suction material contained in the filter chamber is conveyed into a collecting space connected to the vacuum cleaner, in particular a collecting space of a base station, wherein the power of the blower during the suction operation is less than one during the regeneration operation for conveying the suction material power used in the collection room. The pumping of the material to be cleaned from a surface to be cleaned in the filter chamber thus takes place with less power than the conveying of the suction material from the filter chamber into the collecting space during the regeneration. This optimizes the cleaning of the filter chamber, since the suction material is pressed less strongly into the filter chamber during the suction operation. For example, the blower of the vacuum cleaner can be operated during the suction operation with a power of 300 watts, while the blower for the regeneration of the filter chamber is operated with a power greater than 300 watts, for example 400 watts.

Finally, it can be provided that the suction material is blown or sucked out of the filter chamber during the regeneration operation by means of the blower of the vacuum cleaner or by means of an external blower, in particular a blower of a base station. The movement of the suction material in the emptying direction during the regeneration operation can thus be effected by suction or by blowing out of the filter chamber. For this purpose, on the one hand, the own fan of the vacuum cleaner, via a corresponding flow deflection, or an external fan such as a blower of a base station.

Brief description of the drawings

In the following the invention will be explained in more detail by means of exemplary embodiments. Show it:

1 a vacuum cleaner according to the invention in a perspective view,

2 a longitudinal section through a filter chamber of the vacuum cleaner,

3 a longitudinal section through the filter chamber of the vacuum cleaner with attached base station,

4 a plan view of the filter chamber in a discharge direction (based on 3 from above).

Description of the embodiments

1 shows a vacuum cleaner 1 , which is designed here as a battery-operated hand vacuum cleaner. The vacuum cleaner 1 has a housing 14 on which a filter room 2 with a discharge opening 6 , a fan 3 (please refer 2 and 3 ) as well as a handle 16 with a switch 17 , here for example an on-off switch, has. At the the filter room 2 having portion of the housing 14 is a removable suction nozzle 15 arranged, which during a suction operation of the vacuum cleaner 1 Usually is guided over a surface to be cleaned. In this case, located on the surface to be cleaned suction material due to one of the blower 3 generated negative pressure through the suction nozzle 15 and the discharge opening 6 in the filter room 2 led, where the suction material is collected, so that afterwards only purified air to the blower 3 arrives.

The 2 and 3 show a longitudinal section of the filter room 2 having partial portion of the housing 14 without 2 ) or with ( 3 ) one to the filter room 2 connected base station 8th ,

In the filter room 2 is a filter 4 arranged here as a three-dimensional backwash filter 4 is trained. The filter 4 has an effective filter surface 7 for filtering the suction-laden air during the suction operation of the vacuum cleaner 1 on. The filter 4 is cylindrical and points in the direction of the discharge opening 6 of the filter room 2 equal cross-sectional areas 11 on, with one the filter 4 with the discharge opening 6 connecting straight a discharge direction r of the filter chamber 2 Are defined.

The filter 4 Here is for example a fine filter with a filter element 19 , wherein in combination also an additional coarse material filter can be provided, which in a direction from the discharge opening 6 to the fan 3 in front of the filter 4 is arranged. This coarse material filter could for example be designed as a planar filter. The filter element 19 of the filter 4 separates a clean air space 18 from the filter room 2 , The clean air room 18 is at least partially of the cylindrical filter 4 limited. Inside the filter 4 ie within the clean air space 18 , is further a cleaning element 20 arranged, which is designed here as a rotating air nozzle. The cleaning element 20 rotates here about a cylinder longitudinal axis of the filter 4 , The cleaning element 20 has one to the shape of the filter 4 corresponding cylindrical shape. The cleaning element 20 In particular, a scavenging air inlet opening can have on one end face and at least one scavenging air outlet opening on the peripheral surface. In combination with the illustrated also cylindrical design of the filter 4 can be a coaxial arrangement of the cleaning element 20 inside the filter 4 to reach. The filter room 2 is inclusive of the emptying opening 6 designed so that this starting from a cross-sectional area 11 of the filter 4 up to the discharge opening 6 has only constant large cross-sectional areas.

According to 3 is during the regeneration of the filter room 2 a collection room 9 a base station 8th to the discharge opening 6 connected. The cross-sectional area 13 the discharge opening 6 is smaller than the plenum opening 10 , During the regeneration operation is the vacuum cleaner 1 parallel to the gravitational force g acting on the suction material above the base station 8th arranged. That's what the vacuum cleaner is for 1 and the base station 8th corresponding to each other so formed that the vacuum cleaner 1 for a proper regeneration operation only in the base station 8th can be held that the discharge direction r is aligned parallel to the gravitational force g. Thus, in the example shown here are also the filter 4 and the discharge opening 6 one above the other.

4 shows a plan view of the filter chamber 2 starting with the in 3 represented level of the cross-sectional area 11 of the filter room 2 , When viewed in the direction of discharge r, the circumferential lines are located 5 the cross-sectional areas 11 . 12 of the filter room 2 and the cross-sectional area 13 the discharge opening 6 about each other. The cross-sectional areas 11 . 12 . 13 are equal in size and have the geometric shape of a circle, so that the respective perimeters 5 Describe a circle of identical diameter. By in the emptying r equal cross-sectional areas 11 . 12 . 13 and the respective circular shape of the peripheral lines 5 (As well as the concentric arrangement) intersect the circumferential lines 5 in the discharge direction r is not considered. As a result, there are no undercuts in the emptying direction r, ie attachment surfaces within the filter chamber 2 on which suction material can be deposited.

The invention now works so that during a suction operation of the vacuum cleaner 1 first suction material by means of the blower 3 of the vacuum cleaner 1 from the surface to be cleaned into the filter chamber 2 is encouraged. In this case, the suction material is deposited on the outer wall of the filter 4 , in particular the effective filter surface 7 of the filter element 19 , as well as in the other areas of the filter room 2 from. Thus, only freed of suction material air passes through the filter element 19 in the clean air room 18 and flows between the inner wall of the filter 4 and the outer wall of the cleaning element 20 without flowing through the cleaning element 20 to the fan 3 , For a regeneration of the filter room 2 closes a user of the vacuum cleaner 1 the vacuum cleaner 1 to the base station 8th on, with the emptying opening 6 of the filter room 2 with the plenum opening 10 the collection room 9 is connected. For this purpose, if necessary, on the filter room 2 arranged suction nozzle 15 to remove.

During the regeneration operation here becomes the fan 3 of the vacuum cleaner 1 operated against the flow direction used for the suction operation, so that the blower 3 an air flow through the filter 4 in the filter room 2 causes and the deposited suction material in the direction of the base station 8th promotes. During the regeneration operation, the fan becomes 3 operated at a power of here, for example, 400 watts, which is higher than a power of the blower 3 during the suction operation (for example, 300 watts).

The one from the blower 3 generated air flow flows due to an airway switching not shown here exclusively in the trained as Rotationsluftdüse cleaning element 20 , The air passes through the on the front side of the cleaning element 20 trained scavenging air inlet opening into the interior of the cleaning element 20 , Based on this, the purging air passes through purging air outlet openings on the peripheral wall of the cleaning element 20 in the direction of the filter element 19 out. Since the scavenging air outlet openings point in a direction of air deviating from a radial direction, the cleaning element 20 in rotation, leaving the inner wall of the filter 4 is flushed with purging air over the entire circumference. The purging air passes through the filter element 19 from inside to outside, solving this at the effective filter surface 7 Deposited suction material, which is characterized in emptying r further into the filter room 2 and thus also in the direction of the discharge opening 6 and in the direction of the collection room 9 the base station 8th emotional. This allows the filter room 2 be regenerated optimally.

Although the invention by way of example only a particular arrangement of the filter 4 and the discharge opening 6 within the filter room 2 as well as exclusively circular cross-sectional areas 11 . 12 . 13 of the filter 4 and the discharge opening 6 shows, the vacuum cleaner can 1 , in particular the filter room 2 , be designed in many other ways. For example, the cross-sectional areas can 11 . 12 . 13 differ in terms of their geometric shape and size. In addition, it is also possible that the circumferential lines 5 the cross-sectional areas 11 . 12 . 13 when viewed in the direction of discharge r, wherein a first cross-sectional area in the emptying direction r 11 . 12 . 13 not more than 5 mm beyond a cross-sectional area located behind 11 . 12 . 13 should protrude. For example, the filter room 2 also in the emptying direction rejuvenate. It is only essential that in the sense of the invention, no appreciable accumulation surfaces for the suction material during the regeneration operation result, so that an optimal emptying of the filter chamber 2 is guaranteed.

In addition, embodiments are also conceivable in which the emptying direction r is not parallel to the gravitational force g, or in which the filter 4 and the discharge opening 6 not parallel to a longitudinal extent of the filter chamber 2 are arranged, but for example offset by an angle not equal to 0 degrees to each other, so that the surface normal of the cross-sectional areas 11 . 12 . 13 to cut.

Also, the regeneration operation can be related to the blower used 3 vary. Alternatively to your own blower 3 of the vacuum cleaner 1 For example, a blower of the base station 8th be used for regeneration. In addition, the suction material can also be used as an alternative to blowing out of the filter chamber 2 from the filter room 2 be sucked out.

LIST OF REFERENCE NUMBERS

1

 vacuum cleaner

2

 filter chamber

3

 fan

4

 filter

5

 peripheral line

6

 emptying opening

7

 Effective filter surface

8th

 base station

9

 plenum

10

 Plenum opening

11

 Cross sectional area

12

 Cross sectional area

13

 Cross sectional area

14

 casing

15

 suction nozzle

16

 handle

17

 switch

18

 Clean air chamber

19

 filter element

20

 cleaning element

G

 gravitational force

r

 drain direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1243218 B1 [0005]
• WO 00/54644 A1 [0006]

Claims (10)

Vacuum cleaner ( 1 ), in particular hand-guided battery sucker, with a filter chamber ( 2 ) and a blower ( 3 ), the filter space ( 2 ) related to a suction operation of the vacuum cleaner ( 1 ) for conveying suction material from a surface to be cleaned into the filter chamber ( 2 ) with the blower ( 3 ) and the filter space ( 2 ) related to a regeneration operation for emptying the filter space ( 2 ) with a collecting space ( 9 ), characterized in that the filter space ( 2 ) in an emptying direction (r), in particular between one between the filter space ( 2 ) and the blower ( 3 ) arranged filters ( 4 ) and one with the collecting space ( 9 ) connectable emptying opening ( 6 ), substantially constant or increasing cross-sectional areas ( 11 . 12 . 13 ), wherein in the emptying direction (r) first cross-sectional area ( 11 . 12 . 13 ) perpendicular to the emptying direction (r) is not or not more than 5 mm beyond an emptying direction (r) behind the first cross-sectional area ( 11 . 12 . 13 ) lying second cross-sectional area ( 11 . 12 . 13 protrudes). Vacuum cleaner ( 1 ) according to claim 1, characterized in that the filter space ( 2 ) in a discharge direction (r) behind one between the filter space ( 2 ) and the blower ( 3 ) arranged filters ( 4 ) exclusively substantially constant or increasing cross-sectional areas ( 11 . 12 . 13 ), wherein in the emptying direction (r) first cross-sectional area ( 11 ) perpendicular to the emptying direction (r) not or not more than 5 mm above a in the emptying direction (r) behind the first cross-sectional area ( 11 ) lying further cross-sectional area ( 12 . 13 protrudes). Vacuum cleaner ( 1 ) according to claim 1 or 2, characterized in that the cross-sectional areas ( 11 . 12 . 13 ) limiting peripheral lines ( 5 ) in the discharge direction (r) do not intersect. Vacuum cleaner ( 1 ) according to one of the preceding claims, characterized in that the cross-sectional areas ( 11 . 12 . 13 ) of the filter ( 4 ), the filter room ( 2 ) and / or the discharge opening ( 6 ) have a corresponding geometric shape. Vacuum cleaner ( 1 ) according to one of the preceding claims, characterized in that the filter ( 4 ) a backwashable filter ( 4 ) with a clean air space ( 18 ) from the filter room ( 2 ) separating filter element ( 19 ), which, during the suction operation of air to be cleaned from the direction of the filter chamber ( 2 ) in the direction of the clean air space ( 18 ) is flowed through and during the regeneration operation of purge air from the direction of the clean air space ( 18 ) in the direction of the filter space ( 2 ) is flowed through. Vacuum cleaner ( 1 ) according to claim 5, characterized in that the filter ( 4 ) a cleaning element ( 20 ) for backwashing the filter element ( 19 ), which cleaning element ( 20 ) at least partially in one of the filters ( 4 ) limited part of the clean air space ( 18 ), and wherein the cleaning element ( 20 ) is formed, at the filter room ( 2 ) facing side of the filter element ( 19 ) to solve attached suction material. Vacuum cleaner ( 1 ) with a filter space ( 2 ) and a blower ( 3 ), the filter space ( 2 ) related to a suction operation of the vacuum cleaner ( 1 ) for conveying suction material from a surface to be cleaned into the filter chamber ( 2 ) with the blower ( 3 ) and the filter space ( 2 ) related to a regeneration operation for emptying the filter space ( 2 ) with a collecting space ( 9 ), characterized in that the filter space ( 2 ) in a longitudinal section in the direction of a main flow direction through the filter chamber ( 2 ) is designed so that the filter chamber ( 2 ) is traversed during a regeneration operation in the main flow direction or converging thereto. System from a vacuum cleaner ( 1 ) according to one of the preceding claims and a base station ( 8th ) with a collecting space ( 9 ) for receiving the in the filter room ( 2 ) of the vacuum cleaner ( 1 ) contained during a regeneration operation, characterized in that the base station ( 8th ) for holding the vacuum cleaner ( 1 ), in particular for connecting the discharge opening ( 6 ) with a corresponding collecting chamber opening ( 10 ) of the collecting space ( 9 ), that the emptying direction (r) during a regeneration operation of the vacuum cleaner ( 1 ) is substantially parallel to the gravitational force (g). Method for operating a vacuum cleaner ( 1 ), in particular a hand-held Akkusaugers, wherein during a suction suction material by means of a blower ( 3 ) of the vacuum cleaner ( 1 ) from a surface to be cleaned into a filter space ( 2 ) of the vacuum cleaner ( 1 ), and wherein during a regeneration operation the in the filter room ( 2 ) contained in a suction to the vacuum cleaner ( 1 ) connected collecting space ( 9 ), in particular a collecting space ( 9 ) of a base station ( 8th ), characterized in that the power of the blower ( 3 ) during the suction operation is less than one during the regeneration operation for conveying the material to be aspirated into the collecting space ( 9 ) used power. A method according to claim 9, characterized in that the suction material during the regeneration operation by means of the blower ( 3 ) of the vacuum cleaner ( 1 ) or by means of an external blower, in particular a blower of a base station ( 8th ), out the filter room ( 2 ) is blown out or sucked out.

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