Cleaning station

Abstract

The present disclosure relates to a cleaning station (11) for a vacuum cleaner (1). The cleaning station (11) is configured to remove dust particles from a dust collecting device in the vacuum cleaner (1). A filter receiver (13) is provided in the cleaning station to receive a filter (15; 41) from the vacuum cleaner (1). A fan arrangement (21) is provided to create an air flow through the filter (15; 41), wherein the air flow is provided in a reverse direction compared to the air flow in the normal use of the filter, such that dust particles and the like collected in the filter are removed therefrom, and collected in a container (23).

Description

[0001] CLEANING STATION

[0002] Field of the invention

[0003] The present disclosure relates to a cleaning station for a vacuum cleaner, the cleaning station being configured to empty a dust container of the vacuum cleaner.

[0004] Technical background

[0005] Such a cleaning station is described for instance in US-11006797-B1 , which discloses a cleaning station with an accommodation space where a full dust chamber of a vacuum cleaner is docked.

[0006] A general problem associated with cleaning stations is how to make them capable of clearing most of the dust particles caught in a vacuum cleaning in a quick and efficient manner.

[0007] Summary of the invention

[0008] One object of the present disclosure is therefore to provide a cleaning station with a more thorough cleaning of dust collecting features of a vacuum cleaner.

[0009] This object is achieved by a cleaning station as defined in claim 1 . More specifically, in a cleaning station of the initially mentioned kind, there is provided a filter receiver configured to receive a filter, having a filter surface, from the vacuum cleaner. A fan arrangement in the cleaning station is configured to create an air flow through the filter, wherein the air flow is provided in a reverse direction compared to the air flow in the normal use of the filter, such that dust particles and the like, collected in the filter, are removed therefrom. A container in the cleaning station collects removed dust particles and the like.

[0010] With this configuration, the cleaning station becomes capable of cleaning both an internal dust container in a vacuum cleaner and a filter located downstream of that container, resulting in a more thorough cleaning of the vacuum cleaner.

[0011] The filter receiver may as one simple solution comprise an opening in the outer housing of the cleaning station surrounded by a seal. A switch may be provided for switching the cleaning station between a filter cleaning mode and a vacuum cleaner container emptying mode.

[0012] An elastic seal may be provided in the filter receiver, configured to surround the filter surface, and wherein the reverse direction air flow may urge the filter against the elastic seal.

[0013] The cleaning station may comprise a brush or similar device for mechanically working on the dust-laden filter surface to remove dust particles therefrom.

[0014] The cleaning station may further comprise a tube through which the air flow is led, and a nozzle, moving over dust-laden filter covering a sub-portion of the filter surface to remove dust particles therefrom. This concentrates the cleaning effort to a subportion of the filter surface at any instant, which is efficiently cleaned.

[0015] The cleaning station may comprise a screen, having an opening, wherein the screen substantially restricts the air flow through the filter to a sub-portion of the filter surface which coincides with the opening. The cleaning station may be configured to change a mutual position or orientation of the screen and the filter, such that the position of said sub-portion changes as the air flow is provided. This concentrates the cleaning effort to a sub-portion of the filter surface at any instant, which is efficiently cleaned. This may be accomplished in different ways.

[0016] The slot may be configured to receive a circular filter, and the screen may have a similar shape as the filter. The cleaning station may be configured to rotate the filter about a center axis and the opening may be a slot extending on the screen, radially with regard to the axis.

[0017] Alternatively, the cleaning station may be configured to rotate the screen about a center axis, and the opening may be a slot that extend on the screen, radially with regard to said axis.

[0018] In another example, the slot may be configured to receive a cylindrical filter and the screen may provide an opening along the length of the cylinder thus formed.

[0019] Then, the cleaning station may be configured to rotate the filter about a center axis and the opening may be a slot extending on the screen, parallel with the center axis. The screen may be tube-shaped, enclosing the filter, and the cleaning station may be configured to rotate the screen about its center axis. The opening may be a slot extending on the screen, parallel with the center axis.

[0020] The cleaning station may be configured to form a closed-loop air flow, circulating through the filter. This creates an over-pressure on one side of the filter as well as an under-pressure on the other, providing efficient cleaning. A cleaning station cleaning filter may be located in the air flow to remove the dust therefrom.

[0021] The air flow may be fully enclosed in an outer housing of the cleaning station. This provides a more silent operation than if ambient air is used. The closed loop may thus run from a motor / fan combination, creating the air flow, through the filter to be cleaned, to a dust collecting device, preferably including a dust bag, and back to the motor / fan combination.

[0022] A UV light source may be located in the cleaning station to radiate the filter surface. This eliminates microorganisms that may otherwise be accumulated in the filter and may cause odors.

[0023] The cleaning station may also comprise a vibration arrangement configured to vibrate the filter during cleaning to improve release of dust therefrom.

[0024] The cleaning station may further be configured to clean a cyclone canister of a vacuum cleaner.

[0025] The filter may be fully enclosed within the outer housing of the cleaning station during cleaning.

[0026] The cleaning station may further comprise a charger, configured to charge a docked vacuum cleaner.

[0027] The cleaning station may further comprise a main receiver for a vacuum cleaner. Then, the cleaning station is configured to empty the vacuum cleaner dust container when connected to the main receiver.

[0028] Brief description of the drawings

[0029] Fig 1 shows a vacuum cleaner.

[0030] Fig 2 illustrates one example of a cleaning station according to the present disclosure. Fig 3 shows the cleaning station schematically in cross section during operation.

[0031] Fig 4 illustrates cleaning of a first type of filter.

[0032] Fig 5 illustrates cleaning of a second type of filter.

[0033] Fig 6 shows an alternative version of the cleaning process in fig 4.

[0034] Fig 7 illustrates one arrangement for accomplishing a relative movement between a filter and a screen.

[0035] Figs 8A and 8B illustrate cleaning of a third type of filter.

[0036] Fig 9 illustrates cleaning of a fourth type of filter.

[0037] Figs 10A and 10B illustrates another example of a cleaning station according to the present disclosure.

[0038] Fig 11 illustrates another example of a cleaning station according to the present disclosure.

[0039] Detailed description

[0040] The present disclosure relates generally to cleaning stations for vacuum cleaners, fig 1 illustrating one example of a vacuum cleaner 1 of the so-called stick- or upright type. Generally, as is well known, a vacuum cleaner 1 may include a nozzle 3 that can be moved over for instance a floor surface to remove dust therefrom. A fan / motor combination in the vacuum cleaner provides an air stream that moves dust laden air to an internal dust chamber where the dust is separated from the air stream and stored.

[0041] A cleaning station 11 according to an example the present disclosure is illustrated in fig 2. Such a cleaning station 11 is used to empty a vacuum cleaner 1 dust chamber, and may have a main receiver 14 where the vacuum cleaner 1 or a part thereof can be connected to this end. As illustrated, it is possible to detachably dock the vacuum cleaner 1 as a whole with the cleaning station 11. In an alternative example, it is possible to detach the dust chamber from the vacuum cleaner 1 and to dock it on or in the cleaning station 11 .

[0042] The cleaning station 11 is not restricted for use with stick-type vacuum cleaner such as the one illustrated in fig 1 but may be used with dust chambers or canisters of any type of vacuum cleaner, such as vacuum cleaners operated rolling on the floor. While the vacuum cleaner 1 in fig 2 is docked in a main receiver 14 on the outer housing of the cleaning station 11 , a detached dust chamber of a vacuum cleaner can be docked inside the cleaning station 11 for instance in a compartment hidden behind a hatch 20. The main receiver 14 may thus be an internal feature. The cleaning station may comprise an internal dust container, typically several times larger than a vacuum cleaner dust chamber. The internal dust container may be configured as a dust bag. The cleaning station may comprise an internal fan / motor combination for producing an air flow that empties the dust chamber of the vacuum cleaner.

[0043] Most vacuum cleaners comprise secondary filters located in the air stream after the dust chamber. For instance, in cyclone separation systems, a small fraction of the original quantity of dust in the dust laden air stream remains after the cyclone separation step and is collected in a filter that the air stream subsequently reaches. Such secondary filters are also used in other systems apart from cyclone separation systems. Tertiary filters may also be provided for the smallest fraction of dust particles but are in most cases for one-time use after which they are disposed.

[0044] In the cleaning station of fig 2, there is provided a separate filter receiver 13 for such secondary filters. Thus, the filter 15 having a filter surface 17 with a layer of fine dust particles thereon, is taken out of the vacuum cleaner 1 and is inserted in the filter receiver 13, in the illustrates case a slot 13 which is accessible by opening a lid 19. The filter 15 may be completely enclosed inside the outer housing of the cleaning station 11 .

[0045] Thus, when emptying the vacuum cleaner’s 1 dust chamber in the cleaning station 11 , as illustrated in fig 2, the filter 15 may be taken out of the vacuum cleaner 1 and be inserted in the filter receiver 13 of the cleaning station 11 . The cleaning of the filter 15 may be made independently of the emptying of the dust chamber, although largely the same features in the cleaning station may be used. The cleaning of the filter 15 and emptying of the dust container may take place simultaneously or sequentially. There may also be provided a switch 18 on the cleaning station that allows switching between filter cleaning and emptying modes.

[0046] Fig 3 illustrates schematically and in cross section features of the cleaning station 11 according to a first example. When the filter 15 is inserted therein, it is located in a duct 24 where a closed-loop air flow 25 can be formed. This air flow 25 is created by a motor / fan combination 21 and runs from the motor / fan combination 21 through a filter 27 in the cleaning station, through the vacuum cleaner filter 15, which it enters at the ‘clean’ side thereof, and back to the motor / fan combination 21. The order could be reversed such that the motor / fan combination 21 is located in the other half of the loop. This air flow 25 removes dust particles from the ‘dirty’ side of the filter 15 which particles follow the air flow 25 until reaching the filter 27 where they are separated from the air flow and falls into the internal dust container 23 of the cleaning station 11 . This arrangement has two main advantages compared to an arrangement where instead ambient air, from the outside of the cleaning station housing 29 is blown through the filter and then again released outside the housing.

[0047] Firstly, the acoustic noise in this process becomes significantly reduced. This is due to the housing 29 attenuating the noise produced, and this may be improved further, for instance with a foam lining inside the housing. In contrast, a cleaning process using ambient air will be louder.

[0048] Secondly, the fan / motor combination 21 in this arrangement not only lowers the pressure downstream of the vacuum cleaner filter 15 below normal pressure, but it also raises the pressure upstream of the vacuum cleaner filter above the normal (ambient) pressure. This significantly increases the efficiency of the cleaning process.

[0049] The separated dust from the air flow 25, that ends up in the internal dust container 23 of the cleaning station 11 , may be collected by means of a large dust bag 22 with which the dust container 23 is lined. It is also possible to use a legacy-type standard dust bag for this purpose, as will be shown, or to use a container 23 without a bag.

[0050] Typically, the filter 15 may be arranged in the filter receiver and fully enclosed in the housing during cleaning. As illustrated in fig 3, a seal 16 may be used to force the air flow through the filter 15 and avoid leakage. It would also be possible, in an alternative solution, to use ambient air, from the outside of the cleaning station housing 29 blown through the filter and then again released outside the cleaning station housing. This allows a very simple solution, as will be shown, just placing the filter on the outside of the housing against a seal 16 with the ‘dirty’ side towards the opening. The cleaning station 11 may as schematically illustrated also empty the dust chamber of the vacuum cleaner 1 . This may be done using the same motor / fan combination 21 , but it is also possible to provide a separate motor / fan combination to this end.

[0051] It is possible to provide the cleaning station 11 with a charger 26, configured to charge a docked vacuum cleaner 1 at the same time as its dust chamber is emptied. The charger 26 then includes an adapter, which is connected to an AC power outlet.

[0052] The cleaning of the filter may be made more efficient by means of one or more of a number of arrangements as will be described.

[0053] To start with, it may be advantageous to concentrate the air flow 25 to a part of the filter surface 17 (cf. fig 2) at a time. This may be accomplished in different ways as will be shown.

[0054] Typically, there may be provided a constriction that directs the air flow to a limited sub-area of the filter surface 17, and the air flow is made to move over the filter surface by changing the mutual position of the constriction and the filter 15. The concentration of the air flow makes the dust particle removal more efficient.

[0055] A first example of this is illustrated in fig 4. The constriction may be formed by screen 31 , having an opening 33. The screen restricts the air flow through the filter 15 to a sub-portion of the filter surface 17 which coincides with the opening 33. The mutual position, or orientation, of the screen 31 and the filter 15 is changed, such that the position of the above sub-portion changes during the time the air flow 25 is provided.

[0056] In fig 4, the slot 13 is configured to receive a circular filter 15, and the screen 31 has a similar shape as the filter 15 with a similar diameter, both the filter 15 and the screen 31 covering the duct through which the air flow 25 proceeds such that all or most air is forced through the filter 15 and the opening 33 in the screen.

[0057] A first option for moving the opening 33 over the filter surface 17 is to make the filter rotate in the slot, about an axis 35 coinciding with its center. This may be accomplished by providing the outer periphery of the filter with cogs 39 as illustrated in fig 7, the filter forming a cogwheel. It is then possible, by means of another cogwheel 40 in the cleaning station 11 to make the filter rotate in the slot 13 where it is located. That cogwheel 40 may be driven by a stepping motor, for instance. With this configuration, the screen 31 may be integral with the duct through which the air flows. As illustrated in fig 4, the opening 33 may extend radially over the filter area 17 such that the rotation of the filter 15 makes the opening 33 successively cover the entire filter surface 17, providing a concentrated flow at a sub-portion thereof at a time.

[0058] A second option would be to keep the filter 15 stationary while the screen 31 moves in the same way as described above, providing the same mutual movement. This of course requires the screen 31 to be a moveable part, driven by the air flow 25, for instance, or by a motor in the cleaning station 11 as with the filter above.

[0059] While in fig 4, the screen 31 is located downstream of the filter 15 in the air flow 25, the opposite order is possible as indicated in fig 6, the contaminated filter surface then being on the other side.

[0060] Other options for providing a moveable constriction would include a tube with a nozzle moving over the filter area, where the tube sucks the air flow through the nozzle to vacuum clean the surface of the filter.

[0061] Fig 5 illustrates an adaptation of the general concept shown in fig 4 to a cylindrical filter 41 . Then, the cleaning station has a slot configured to receive the cylindrical filter 41 . The cylindrical filter may, during use, receive a dust laden air stream axially into its interior, remove the dust and let the air escape through its mantle surface, thereby trapping dust inside the filter. Alternatively, the air stream may be reversed, instead collecting the dust at the outer face of the cylinder mantle surface. Fig 5 illustrates the cleaning of a filter used in the latter alternative. The cylinder may in some cases be tapering, thus forming the frustum of a cone.

[0062] As shown in fig 5 , the screen 43 is provided as an outer cylindrical sleeve, having an opening 47 along the length of its cylindrical mantle surface. The cleaning station is configured to rotate the filter about its center axis 45. Alternatively, as with the flat filter in fig 4, the cleaning station may be configured to rotate the screen 43 about the same center axis 45. As with the flat filter 15, it is possible to reverse the air flow in fig 5, instead removing dust collected on the inside of the tubular, cylindrical filter 41 , and it is also possible alternatively to place the screen 43 on the inside of the filter.

[0063] Figs 8A and 8B illustrate cleaning of a third type of filter 51 . This filter 51 is cylindrical as the one in fig 5 but is pleated in order to accomplish a greater filter area compared to the filter in fig 5. The pleated structure, forming ridges 53 and grooves 55 in the axial direction on the mantle surface of the cylinder, makes the use of an outer sleeve 43 as shown in fig 5 difficult. In this case there is therefore provided a circumferential collar 57 that matches the surface of the filter. This collar 57 covers as illustrated in fig 8B a portion of the filter surface in an entire circumference but along a fraction of the axial length thereof. The inner circumference of the collar 75 may match the cross section of the pleated filter 51 , such that leakage is reduced. The collar 57 may push air onto this sub portion of the filter area or suck air therefrom depending on the desired air flow direction and thus provides a constriction in the air flow as with the previous examples.

[0064] A linear, axial movement of the filter 51 in relation to the collar 57 is accomplished in order to make the processed sub-portion of the filter 51 move over the filter area. This may be achieved by the collar 57 moving axially while the filter is stationary as indicated in fig 8B, but in most cases a movement of the filter 51 can be accomplished more readily. Both alternatives are possible in the context of the present disclosure.

[0065] Fig 9 illustrates schematically and in cross section another example where a linear movement of a filter 61 in relation to a constriction 63 is achieved. Here, the restriction is formed in the duct 65 by providing slots 67 on both sides of the receiver of the filter 61 , although a slot on either side would be sufficient. This concentrates the air flow through the filter 61 as it is slid past the slots 67. The slots 67 may cover the entire width of the filter’s 61 area. This example is particularly useful if a rectangular filter 61 is used, as the slots 67 may then cover the full width of the filter area without leaking air on the side of the filter 61 . However, non-rectangular filters may be cleaned in this way, for instance being inserted in a rectangular cassette that seals off areas on the sides of the filter at the locations where the slots are longer than the filter is wide. The motion of the filter 61 past the slots 67 may be provided by an actuator (not shown) or manually by the user, for instance.

[0066] Figs 10A and 10B illustrates another example of a cleaning station 11 according to the present disclosure. This cleaning station 11 is capable of switching from cleaning a filter 15 and the main dust container 71 of a vacuum cleaner 1.

[0067] In fig 10A, cleaning of the main dust container 71 takes place, the vacuum cleaner 1 being connected to the main receiver 14. A fan / motor combination 21 draws an air flow 73 through the vacuum cleaner 1 and its main dust container 71 into a duct 75 of the cleaning station 11 leading to an internal dust container in the form of a dust bag 77, also filtering dust from the air flow 73. The air flow then passes through a vent 79 in the cleaning station housing 29 to the surrounding space. It is possible to accomplish a closed loop air flow by instead leading the air flow back to an entry point of the main dust container 71 via a valve 81 and a tube 83 of the vacuum cleaner 1 in an alternative partial air flow 73’. In either case, the main dust container 71 is emptied.

[0068] In fig 10B, the cleaning station 11 shifts to cleaning the filter 15 by activating a valve 85 that closes the path from the main dust container 71 and instead opens the path to the filter 15. This cleans the filter using an air flow loop 87 driven by the motor / fan combination 21 through a duct 89 partially coinciding with the duct 75 leading from the main dust container 71 . As before, dust is removed from the air flow loop 87 and collected by the dust bag 77. The aforementioned valve 81 of the tube 83 is closed.

[0069] With reference again to fig 3, the filter cleaning effect may optionally be enhanced by providing a vibration arrangement 28 configured to vibrate the filter 15 during cleaning. This makes the filter cleaning more efficient by forcing dust particles to leave the filter surface. A similar effect can be achieved by making the air flow past the filter fluctuate. This can be arranged with an oscillating obstruction in the duct 24 or by varying the motor / fan power.

[0070] In fig 3, there is further provided a UV light source 37 in the cleaning station, adapted to radiate the filter surface. This serves to eliminate bacteria and other microorganisms that can reduce odors emitted by the filter.

[0071] Fig 11 illustrates another example of a cleaning station 11 according to the present disclosure. In this case, the filter receiver 13 is located on the outer side of the cleaning station’s outer housing 29 but optionally hidden behind a hatch 91 , which may also cover a dust collecting device 23 for emptying a vacuum cleaner’s main dust container 71. The filter receiver 13 comprises an opening in the outer housing 29 of the cleaning station. The cleaning station 11 comprises a slot 93 as a main receiver for receiving a vacuum cleaner and emptying its canister and optionally for charging its batteries. At the same time, a filter 15 may be fitted in the filter receiver 13 as illustrated in fig 11 . The filter 15, e.g. a HEPA-filter, is inserted into the filter receiver 13 with the dust laden side inwards, and in this case the cleaning station 11 creates an air flow of ambient air through the filter via openings in between the outer housing 29 and the hatch 91 . There may be a seal (not shown) in between the edges of the filter 15 and the filter receiver 13 which prevent leaks and forces the air flow through the filter 15.

[0072] This seal may be permanently attached to the edges of the filter 15 or to the rim of the filter receiver 13.

[0073] It is possible to increase the cleaning function by concentrating the air flow to a part of the filter area of the filter 15 as already described above which embodiments may be combined in a cleaning station according to Fig 11 . There may also be provided a moving brush or other mechanical device touching the dust laden side of the filter 15 and thereby mechanically forces dust particles to leave the filter area.

[0074] The present disclosure is not restricted to the above-described embodiment and may be varied and altered in different ways within the scope of the appended claims.

Claims

CLAIMS1 . A cleaning station (11 ) for a vacuum cleaner (1 ), the cleaning station (11 ) being configured to empty a dust container of the vacuum cleaner (1 ), characterized by a filter receiver (13) configured to receive a filter (15; 41 ) having a filter surface (17) from the vacuum cleaner (1 ), a fan arrangement (21) configured to create an air flow through the filter (15; 41), wherein the air flow is provided in a reverse direction compared to the air flow in the normal use of the filter, such that dust particles and the like collected in the filter are removed therefrom, and a container (23) collecting removed dust particles and the like.

2. Cleaning station according to claim 1 , wherein said filter receiver (13) comprises an opening in the outer housing (29) of the cleaning station.

3. Cleaning station according to claim 1 or 2, further comprising a switch (18) for switching the cleaning station between a filter cleaning mode and a vacuum cleaner container emptying mode.

4. Cleaning station according to any of the preceding claims, comprising an elastic seal (16) in said filter receiver (13) configured to surround said filter surface (17) wherein the reverse direction air flow urges the filter against the elastic seal.

5. Cleaning station according to any of claims 1-4, comprising a brush or similar device for mechanically working on the dust-laden filter surface (17) to remove dust particles therefrom.

6. Cleaning station according to any of claims 1-4, comprising a tube through which the air flow is led, and which comprises a nozzle, moving over a subportion of the dust-laden filter surface (17) to remove dust particles therefrom.

7. Cleaning station according to any of claims 1-4, comprising a screen (31 ), having an opening (33), the screen substantially restricting the air flow through the filter (15; 41 ) to a sub portion of the filter surface (17) which coincides with the opening (33), wherein the cleaning station (11) is configured to change a mutualposition or orientation of the screen (31 ) and the filter (15; 41 ), such that the position of said sub portion changes as the air flow is provided.

8. Cleaning station according to claim 7, wherein the slot is configured to receive a circular filter (15), and the screen (31 ) has a similar shape as the filter (15).

9. Cleaning station according to claim 8, wherein the cleaning station is configured to rotate the filter (15) about a center axis (35) and the opening is a slot (33) extending on the screen (31), radially with regard to said axis.

10. Cleaning station according to claim 8, wherein the cleaning station is configured to rotate the screen (31 ) about a center axis (35), and the opening is a slot (33) extending on the screen, radially with regard to said axis.11 . Cleaning station according to claim 7, wherein the slot is configured to receive a cylindrical filter (41 ), and the screen (43) provides an opening (47) along the length of the cylinder.

12. Cleaning station according to claim 11 , wherein the cleaning station is configured to rotate the filter about a center axis (45) and the opening is a slot (47) extending on the screen, parallel with the center axis.

13. Cleaning station according to claim 11 , wherein the screen (43) is tube-shaped enclosing the filter (41 ) and the cleaning station is configured to rotate the screen (43) about its center axis (45), and the opening is a slot (47) extending on the screen, parallel with the center axis (45).

14. Cleaning station according to claim 1 , wherein the cleaning station (11 ) is configured to form a closed-loop air flow (25), circulating through the filter (15; 41 ).

15. Cleaning station according to claim 14, wherein a cleaning filter (27) is located in the air flow (25).

16. Cleaning station according to claim 14 or 15, wherein the air flow (25) is fully enclosed in an outer housing (29) of the cleaning station (11 ).

17. Cleaning station according to claim 14-16, wherein the closed loop (25) runs from a motor / fan combination (21 ), creating the air flow through the filter(15; 41) to be cleaned, to a dust collecting device (22, 27), preferably including a dust bag (22), and back to the motor / fan combination (21).

18. Cleaning station according to any of the preceding claims, wherein a UV light source (37) is located in the cleaning station to radiate the filter surface.

19. Cleaning station according to any of the preceding claims, wherein the cleaning station (11 ) comprises a vibration arrangement (28) configured to vibrate the filter (15; 41 ) during cleaning.

20. Cleaning station according to any of the preceding claims, which is further configured to clean a cyclone canister of a vacuum cleaner. 21 . Cleaning station according to any of the preceding claims, wherein the filter (15) is fully enclosed within the outer housing (29) of the cleaning station (11 ) during cleaning.

22. Cleaning station according to any of the preceding claims, further comprising a charger (26), configured to charge a docked vacuum cleaner.

23. Cleaning station according to any of the preceding claims, further comprising a main receiver (14, 93) for a vacuum cleaner (1 ), the cleaning station (11 ) being configured to empty the vacuum cleaner (1 ) dust container when connected to the main receiver (14).

Images