Base station and system for compressing dirt in the collection area of a suction unit

Abstract

A base station (200) for a suction unit (100) is described, wherein the suction unit (100) has a collection area (103) for receiving dirt that has been vacuumed up by the suction unit (100), and wherein the suction unit (100) has a compression function for compressing dirt that is arranged in the collection area (103). The base station (200) is configured to receive the suction unit (100) in a receptacle (201) of the base station (200) and to effect automatic actuation of the compression function of the suction unit (100) by means of a resilient hook (210).

Description

[0001] The invention relates to a base station for a vacuum unit, such as a handheld vacuum cleaner. In particular, the invention relates to the convenient and reliable compression of dirt in the collection area of ​​a vacuum unit.

[0002] A suction unit, in particular a handheld vacuum cleaner, typically comprises a separation unit with a filter module that is designed to separate dust particles from the suction air of the suction unit and collect them in a collection area of ​​the separation unit, so that the collection area gradually fills with dirt during operation of the suction unit.

[0003] US 2023 / 0 346 185 A1 describes a base station for a vacuum cleaner. JP 2019 - 005 068 A describes a vacuum cleaner and a base station for a vacuum cleaner.

[0004] This document addresses the technical problem of achieving a comfortable and thorough compression of dirt in the collection area of ​​a suction unit, in particular in order to increase the operating time of the suction unit between successive emptyings of the collection container and / or to increase the suction power of the suction unit.

[0005] The object is achieved by the subject matter of the independent patent claim. Advantageous embodiments are defined in particular in the dependent patent claims, described in the following description, or illustrated in the accompanying drawings.

[0006] According to one aspect, a base station for a suction unit (in particular for a battery-operated and / or handheld vacuum cleaner, such as a handheld vacuum cleaner) is described. The suction unit comprises a collection area for receiving dirt that has been vacuumed up by the suction unit. The collection area can be arranged around a (possibly cylindrical) filter module of the suction unit. The collection area can be annular, in particular annular-cylindrical, for example.

[0007] The suction unit includes a compression function for compressing dirt arranged in the collection area. For this purpose, the suction unit can in particular have a compression element that can be moved within the collection area to compress (i.e., press together) the dirt. The compression element can, for example, be moved along the longitudinal axis of the suction unit from a suction position (for suction operation) to an end position (for compression) in order to compress the dirt. The end position can be arranged on a flap for emptying the collection area. The compression element can be designed as a compression ring, wherein the compression ring can in particular be arranged around the (circular-cylindrical) filter module. During the movement along the longitudinal axis, the compression ring can cause the surface of the filter module to be wiped and thus cleaned.This can increase the suction power of the suction unit.

[0008] The suction unit may have an operating element that can be manually actuated by a user of the suction unit to effect the compression function, in particular to move the compression element along the longitudinal axis (from the suction position to the end position). The operating element may have a button that can be actuated by the user. The operating element, in particular the button, can be moved by the user along the longitudinal axis to effect a corresponding movement of the compression element.

[0009] The base station is configured to receive the suction unit in a receptacle (i.e., in a holder) of the base station. In other words, the base station has a receptacle for receiving, in particular for carrying or holding, the suction unit. The receptacle can be configured such that the suction unit can be inserted into the receptacle along an insertion direction, so that the suction unit is ultimately arranged in the receptacle and held by the base station. The receptacle can further be configured such that the suction unit can be removed from the receptacle along a removal direction. The removal direction is typically exactly opposite to the insertion direction. The removal direction and the insertion direction can each run vertically to the floor above which the base station is arranged. The insertion direction preferably runs from top to bottom, and the removal direction preferably runs from bottom to top.

[0010] The base station can be configured to charge the electrical energy storage device of the suction unit while the suction unit is arranged in the base station receptacle. For this purpose, the base station can be configured to be electrically connected to an electrical power supply network.

[0011] The base station is further configured to automatically activate the compression function, in particular, an automatic movement of the compression element, of the suction unit. The automatic activation of the compression function of the suction unit can be effected by while the suction unit is inserted into the base station receptacle; while the suction unit is arranged in the base station receptacle; and / or while the suction unit is removed from the base station receptacle.

[0012] Thus, a base station for a suction unit is described that enables automatic activation of the compression function, in particular automatic movement of the compression element, between successive suction operations of the suction unit. This allows the service life and / or suction power of the suction unit to be conveniently increased.

[0013] The base station can have an actuating element or an actuating means configured to actuate the compression function of the suction unit, in particular while the suction unit is being inserted into the base station receptacle along the insertion direction and / or while the suction unit is being removed from the base station receptacle along the removal direction. In particular, a movement of the compression element can be effected by the actuating element or the actuating means of the base station.

[0014] The base station can thus be configured (by providing an actuating element or an actuating means) to automatically cause a movement of the compression element along the longitudinal axis, in particular while the suction unit is being inserted into the base station receptacle and / or while the suction unit is being removed from the base station receptacle. The compression function of the suction unit can thus be effected in a particularly efficient and reliable manner.

[0015] The base station can be designed to act on the operating element of the suction unit in order to bring about automatic actuation of the compression function, in particular in order to move the compression element. The base station can in particular have an actuating means which is designed to mechanically act on the operating element of the suction unit in order to automatically bring about the compression function of the suction unit, in particular in order to move the compression element, while the suction unit is being inserted into the receptacle of the base station along the insertion direction and / or while the suction unit is being removed from the receptacle of the base station along the removal direction. By directly acting on the operating element of the suction unit, the compression function of the suction unit can be brought about in a particularly efficient and reliable manner.

[0016] As already explained, the operating element of the suction unit can be designed to be moved manually along the longitudinal axis of the suction unit in order to thereby move the compression element, in particular the compression ring, of the suction unit along the longitudinal axis within the collection area (from the suction position to the end position) and to thereby compress the dirt arranged in the collection area.

[0017] The actuating means of the base station can be configured to automatically move the operating element along the longitudinal axis while the suction unit is inserted into the base station receptacle along the insertion direction and / or while the suction unit is removed from the base station receptacle along the removal direction. The insertion direction and / or the removal direction advantageously each have a (main) directional component that runs parallel to the longitudinal axis of the suction unit. Particularly preferably, the insertion direction and / or the removal direction run parallel to the longitudinal axis of the suction unit. Thus, the compression function of the suction unit can be automatically effected in a particularly efficient and reliable manner.

[0018] The actuating means of the base station can comprise a hook configured to mechanically act on the operating element, in particular on the button of the operating element, of the suction unit. The hook can be configured such that the hook is resiliently deflected, allowing the operating element, in particular the button of the suction unit, to pass while the suction unit is inserted into the receptacle of the base station along the insertion direction, so that the hook blocks the operating element, in particular the button, of the suction unit along the removal direction when the suction unit is arranged in the receptacle of the base station.

[0019] The hook of the base station can further be designed such that the hook acts on the operating element, in particular on the button, of the suction unit, and thereby moves the compression element along the longitudinal axis of the suction unit (towards the end position) while the suction unit is removed from the receptacle of the base station along the removal direction.

[0020] The hook allows the compression element to be automatically moved in a particularly robust and reliable manner when the suction unit is removed from the base station.

[0021] The hook can be configured such that the hook is resiliently deflected, allowing the operating element, in particular the button, to pass while the suction unit is removed from the base station receptacle along the removal direction when, in particular as soon as, the force exerted by the operating element on the hook is greater than a predefined force threshold. The force threshold is preferably configured such that the force threshold that must be overcome to deflect the hook is reached, in particular only when or exactly when the compression element (in the presence of an empty collection area) reaches the end position.

[0022] The hook can thus be designed in such a way that when the suction unit is removed from the receptacle of the base station, the compression element is moved to the end position by the action of the hook on the operating element when there is no dirt in the collection area (ie when the collection area is empty).

[0023] Alternatively or additionally, the hook can be designed such that the hook is deflected resiliently so that the operating element can pass the hook when, in particular as soon as, the suction unit is moved further along the removal direction from the receptacle of the base station after reaching the end position of the compression element.

[0024] By using a hook designed in this way to automatically activate the compression function, the compression function can be fully executed when the suction unit is removed. This can further increase the comfort, service life, and / or suction power of the suction unit.

[0025] According to a further aspect, a system is described that comprises a suction unit (in particular a handheld vacuum cleaner) having a collection area for receiving dirt that has been vacuumed up by the suction unit. The suction unit further has a compression function for compressing dirt located in the collection area. Furthermore, the system comprises a base station for the suction unit, wherein the base station is configured as described in this document.

[0026] It should be noted that any aspects of the base station and the system described in this document can be combined in a variety of ways. In particular, the features of the patent claims can be combined in a variety of ways.

[0027] The invention will be described in more detail below with reference to exemplary embodiments illustrated in the accompanying drawings. Figure 1 shows an exemplary suction unit with a separation unit having a scraper and / or compression ring; Figures 2a to 2c show different views of a base station for a suction unit; and Figures 3a to 3d show different states of a system with a base station and a suction unit.

[0028] As stated at the beginning, this document is concerned with achieving a particularly comfortable and reliable compression of the dirt in the collection area of ​​a vacuum unit. In this context, Fig. 1 an exemplary suction unit 100, in particular a handheld vacuum cleaner, with a separation unit 150. The separation unit 150 comprises a possibly (circular) cylindrical, collecting container 102 with a lid 104 (in particular with a flap), which is arranged, for example, on an end face or end side of the collecting container 102 and which can be opened to empty the collecting container 102. A filter module 105 is typically arranged in the center of the collecting container 102, which is designed to separate dirt and / or dust particles from the suction air flow of the suction unit 100. The filter module 105 can be (circular) cylindrical. The dirt and / or dust particles can be collected in an annular collection area 103 of the collecting container 102 around the filter module 105.

[0029] The suction unit 100 comprises a blower 107 designed to drive the suction air flow through the suction unit 100, in particular through the separation unit 150. The suction air flow passes through a suction inlet 101 of the suction unit 100 into the collection container 102, in particular into the collection area 103 of the collection container 102. In the collection container 102, the suction air flow is guided, in particular sucked, through the filter module 105, so that the dirt and dust particles are separated from the suction air flow and collected in the collection area 103. After passing through the filter module 105, the suction air flow reaches the blower 107 and is blown out of the suction unit 100 there.

[0030] The Fig. 1 The illustrated suction unit 100 comprises a scraping and / or compression ring 106 (generally a scraping and / or compression element) arranged around the (cylindrical) filter module 105. The scraping and / or compression ring 106 can be movably arranged on the filter module 105 such that the scraping and / or compression ring 106 can be moved along the longitudinal or vertical axis of the filter module 105 (and the suction unit 100) in order to clean the surface of the filter module 105. The filter module 105 can have a first end face or end side facing the fan 107 and a second end face or end side facing the lid 104 of the collecting container 102. The scraper and / or compression ring 106 can be designed to be moved along the longitudinal axis from a suction position (at the first end face of the filter module 105) to an end position (at the second end face of the filter module 105).

[0031] During the movement of the scraper and / or compression ring 106 from the suction position to the end position, the scraper and / or compression ring 106 acts mechanically on the surface of the filter module 105, thereby removing protective and / or dust particles from the surface of the filter module 105. This allows for convenient cleaning of the filter module 105.

[0032] The scraper and / or compression ring 106 can have a specific spatial extension in the radial direction (radial to the longitudinal axis). If necessary, the scraper and / or compression ring 106 can extend radially from the surface of the filter module 105 to the inside of the wall of the collection container 102. In other words, the scraper and / or compression ring 106 can, if necessary, extend over the entire (annular) cross-section of the collection area 103. Thus, the movement of the scraper and / or compression ring 106 from the suction position to the end position can cause the dirt and / or dust located in the collection area 103 to be transported toward the lid 104 of the collection container 102 and out of the collection container 102 (when the lid 104 is open). This allows the collection container 102 to be thoroughly emptied.Furthermore, when the lid 104 of the collecting container 102 is closed, the movement of the scraper and / or compression ring 106 towards the end position can cause the dirt in the collecting area 103 to be compressed, thus creating space in the collecting area 103 for the reception of additional dirt.

[0033] The suction unit 100 may include a handle 108 that allows a user to hold the suction unit 100 (with one hand). The handle 108 may be positioned behind or downstream of the fan 107 with respect to the flow direction of the suction air flow. The handle 108 and the suction port 101 may be formed by a housing of the suction unit 100.

[0034] In the illustrated example, the suction unit 100, in particular the separation unit 150, comprises a rod 110, via which a movement of the scraper and / or compression ring 106 can be effected. The rod 110 can be arranged behind the scraper and / or compression ring 106 along the longitudinal axis and / or with respect to the flow direction of the suction air flow, so that the scraper and / or compression ring 106 can be pushed by the rod 110 from the suction position to the end position. The rod 110 can be arranged in a guide, e.g., in a guide channel, on the housing of the suction unit 100. Furthermore, a knob 111 may be arranged on the rod 110, which allows a user to act on the rod 110 to move the rod 110 along the longitudinal axis and thus to cause the scraper and / or compression ring 106 to move from the suction position to the end position.The rod 110 and / or the knob 111 may generally be referred to as a control element of the compression function of the suction unit 100.

[0035] The rod 110 can be moved by means of a (return) spring 114 (see e.g. Fig. 3a ) are held in their initial position (wherein the initial position of the rod 110 corresponds to the suction position of the stripping and / or compression ring 106). The spring 114 can be configured to automatically return the rod 110 to its initial position after actuation of the ejection and / or compression mechanism. In particular, when the button 111 of the ejection rod 110 is released, the ejection rod 110 can be moved back to its initial position due to the restoring force of the spring 114, thereby moving the stripping and / or compression ring 106 back to the suction position.

[0036] One or more accessories may be provided for a vacuum unit 100, where the individual accessories can be coupled to the suction nozzle 101 of the vacuum unit 100 to enable the vacuum unit 100 to perform specific vacuuming tasks. Examples of accessories include a floor vacuum nozzle, a vacuum nozzle with a brush roller, an upholstery vacuum nozzle, etc.

[0037] The suction unit 100 can be configured to be arranged on a base station, e.g., in order to charge the electrical energy storage device 109 of the suction unit 100 via the base station. The base station can, for example, be configured to be attached to a wall, and a user can be enabled to insert the suction unit 100 from above into a receptacle provided for the suction unit 100 in the base station, so that the suction unit 100 is held by the base station. The base station is preferably configured such that the charging interface of the suction unit 100 is electrically conductively coupled to the electrical power supply of the base station when the suction unit 100 is arranged in the receptacle of the base station.

[0038] In the Figuren 2a bis 2c different views of an exemplary base station 200 for a suction unit 100 are shown. Furthermore, in the Figuren 3a bis 3d Different states of a system 300 are shown, which comprises the base station 200 and the suction unit 100. The base station 200 described in this document comprises an actuating element or an actuating means 210, 211, which is designed to act on the stripping and / or compression ring 106 of the suction unit 100 in order to cause the filter module 105 to be stripped and / or the dirt to be compressed in the collection area 103 of the suction unit 100. The movement of the stripping and / or compression ring 106 of the suction unit 100 can be effected automatically while the suction unit 100 is being inserted into the base station 200 and / or while the suction unit 100 is being removed from the base station 200.

[0039] In the Figuren 2a bis 2c and 3a bis 3d In the example shown, the actuating element or the actuating means 210, 211 of the base station 200 is designed to act on the operating element 110, 111, in particular on the button 111, of the suction unit 100 while the suction unit 100 is inserted into the base station 200 and / or while the suction unit 100 is removed from the base station 200, in order to thereby move the stripping and / or compression ring 106.

[0040] Fig. 2a shows a front view of the base station 200 with the receptacle 201 for receiving the suction unit 100 and with a charging interface 202 for charging the energy storage device 109 of the suction unit 100. The actuating element or the actuating means 210, 211 of the base station 200 comprises a hook 210, wherein the hook 210 can be movably mounted via a spring 211. Fig. 2b shows a side view of the base station 200 with the hook 210 facing the suction unit 100. The spring 211 can be used to push the hook 210 away from the suction unit 100 in order to allow the button 111 of the suction unit 100 to pass when inserting and / or removing the suction unit 100. Fig. 2c shows the section of Fig. 2b .

[0041] In Fig. 3a The suction unit 100 was arranged along the insertion direction 301 in the receptacle 201 of the base station 200. The insertion direction 301 typically corresponds to the vertical direction from top to bottom. When the suction unit 100 is inserted, the button 111 passes the hook 210, which is pushed away by the weight of the suction unit 100, so that the button 111 is arranged behind the hook 210 along the insertion direction 301 when the suction unit 100 is arranged in the receptacle 201 of the base station 200.

[0042] Fig. 3b shows an excerpt from Fig. 3a . As from Fig. 3b As can be seen, the hook 210 is arranged in front of the knob 111 with respect to the insertion direction 301 such that the hook 210 mechanically acts on the knob 111 when the suction unit 100 is moved, in particular lifted, counter to the insertion direction 301. This mechanical action of the hook 210 on the knob 111 causes the knob 111 to act on the rod 110 and, as a result, on the scraper and / or compression ring 106 of the suction unit 100.

[0043] Fig. 3c illustrates how the suction unit 100 is removed from the receptacle 201 of the base station 200 along the removal direction 302, which is opposite to the insertion direction 301, and how the hook 210 acts on the button 111 of the suction unit 100 and thereby moves the scraper and / or compression ring 106 of the suction unit 100 over the filter module 105 and / or within the collection area 103 toward the deformity. Upon removal of the suction unit 100, a compression of the dirt within the collection area 103 of the suction unit 100 is thus automatically effected.

[0044] When the stripping and / or compression ring 106 of the suction unit 100 has reached the end position or an intermediate position between the suction position and the end position, which cannot be overcome due to the (compressed) dirt in the collection area 103, the hook 210 is pushed back by the button 111 so that the button 111 can pass the hook 210 and so that the suction unit 100 can be removed from the receptacle 201 of the base station 200. The stripping and / or compression ring 106 of the suction unit 100 is then automatically moved back into the suction position by the return spring 114 (as in Fig. 3d shown).

[0045] As already explained, the suction unit 100 can have an ejection and compression function. A user of the suction unit 100 can actuate a button 111 of the suction unit 100, so that the ejection and compression ring 106 is pulled over the filter module 105, e.g., over a lint filter. In doing so, the filter module 105 is freed of dust and dirt. If the flap 104 of the collection container 102 is closed, the dirt is compressed and stored in the lower area of ​​the collection container 102 (i.e., in the immediate vicinity of the flap 104).

[0046] The compression function allows the user to vacuum more dust / dirt into the collection container 102 before the collection container 102 needs to be emptied. This document describes measures that enable this compression function to be automatically activated mechanically while the suction unit 100 is removed from the base station 200. Thus, the compression can be performed before each vacuuming process, thereby increasing the suction power of the suction unit 100. Furthermore, the convenience of the suction unit 100 can be increased, since the compression function no longer needs to be manually activated by a user.

[0047] The suction unit 100 can be arranged, in particular suspended, in a base station 200. By inserting the suction unit 100 into the base station 200, the button 111 of the suction unit 100 can be caused to engage the hook 210 of the base station 200.

[0048] When the suction unit 100 is removed from the base station 200, e.g., lifted vertically upwards, the knob 111 of the suction unit 100 engages the hook 210 of the base station 200. Initially, the preload of the hook 210 is greater than the actuating force of the compression function. Thus, when the suction unit 100 is lifted, the ejection and compression ring 106 is pulled downward over the filter module 105, thereby compressing the dirt and / or dust in the collection container 102. If the pre-tensioning force of the hook 210 (i.e., the predefined force threshold value) is overcome by the compression or by reaching the end position of the ejection and compression ring 106, the hook 210 snaps backwards so that the actuating button 111 of the suction unit 100 is released and so that the ejection and compression ring 106 is pressed back into the starting position, i.e., into the suction position, by the spring 114.

[0049] Automatic filter cleaning and dust compression can thus be effected in a suction unit 100, in particular in a bagless cordless vacuum cleaner. This can be achieved by locking the compression button 111 of the suction unit 100 (normally operated by hand) by the base station 200 when the suction unit 100 is hung in the base station 200. When the suction unit 100 is removed, dust compression is then automatically effected by the base station 200. Thus, a handheld vacuum cleaner 100 with a compression function for the separated dust in the dust collection container 102 is described, wherein the compression function is automatically confirmed when the handheld vacuum cleaner 100 is inserted into the base station 200 or when the handheld vacuum cleaner 100 is removed from the base station 200.

[0050] For this purpose, the base station 200 can have a deflectable hook 210, which, during a removal process of the suction unit 100 from the base station 200, holds the compression button 111 on the suction unit 100 in a locked state and thereby moves the stripping and / or compression ring 106 of the suction unit 100 (toward the end position) until the stripping and / or compression ring 106 can no longer be moved (due to the end position or due to the dirt in the collection container 102). When the removal force on the hook 210 increases (due to the further lifting of the suction unit 100 during removal of the suction unit 100 from the base station 200), the hook 210 is deflected and releases the compression button 111. The scraper and / or compression ring 106 is then returned to its position of use by the spring 114 of the suction unit 100.

[0051] The present invention is not limited to the embodiments shown. In particular, it should be noted that the description and figures are intended only to illustrate the principle of the proposed base station 200 and / or the proposed system 300. List of reference symbols

[0052] 100Suction unit 101Suction mouth 102Collection container 103Collection area 104Cover (flap) 105Filter module 106Wiping and / or compression element (wiping and / or compression ring) 107Blower 108Handle 109Electrical energy storage device 110Rod 111Button 114Spring module (spring) 150Separation unit 200Base station 201Receptacle (suction unit) 202Charging interface 210Hook 211Spring 300System 301Insertion direction 302Removal direction

Claims

1. A base station (200) for a suction unit (100), wherein the suction unit (100) has a collection area (103) for receiving dirt that has been vacuumed up by the suction unit (100); wherein the suction unit (100) has a compression function for compressing dirt that is arranged in the collection area (103); wherein the suction unit (100) has an operating element (110, 111) that can be manually actuated by a user of the suction unit (100) to effect the compression function of the suction unit; wherein the operating element (110, 111) is designed to be manually moved along a longitudinal axis of the suction unit (100) to thereby move a compression element (106) of the suction unit (100) along the longitudinal axis within the collection area (103) to compress the dirt arranged in the collection area (103); wherein the base station (200) is configured to receive the suction unit (100) in a receptacle (201) of the base station (200);and - to effect an automatic actuation of the compression function of the suction unit (100); wherein the base station (200) has an actuating means (210, 211) which is designed to automatically move the operating element (110, 111) along the longitudinal axis while the suction unit (100) is removed from the receptacle (201) of the base station (200) along a removal direction (302); wherein the actuating means (210, 211) comprises a hook (210) which is designed to act mechanically on the operating element (110, 111) of the suction unit (100); ; characterized in thatthe hook (210) is designed such that - the hook (210) is resiliently deflected and in the process allows the operating element (110, 111) to pass, while the suction unit (100) is inserted into the receptacle (201) of the base station (200) along the insertion direction (301), so that the hook (210) blocks the operating element (110, 111) along the removal direction (302) when the suction unit (100) is arranged in the receptacle (201) of the base station (200); and - the hook (210) acts on the operating element (110, 111) and in the process moves the compression element (106) along the longitudinal axis of the suction unit (100) while the suction unit (100) is removed from the receptacle (201) of the base station (200) along the removal direction (302).

2. Base station (200) according to claim 1, wherein the hook (210) is designed such that the hook (210) is resiliently deflected and thereby allows the operating element (110, 111) to pass, while the suction unit (100) is removed from the receptacle (201) of the base station (200) along the removal direction (302) when, in particular as soon as, the force exerted by the operating element (110, 111) on the hook (210) is greater than a predefined force threshold value.

3. Base station (200) according to claim 2, wherein - the compression element (106) of the suction unit (100) is designed to be moved from a suction position along the longitudinal axis to an end position within the collection area (103); and - the hook (210) is designed such that - when the suction unit (100) is removed from the receptacle (201) of the base station (200), the compression element (106) is moved to the end position by the action of the hook (210) on the operating element (110, 111) when no dirt is arranged in the collection area (103); and / or - the hook (210) is resiliently deflected so that the operating element (110, 111) can pass the hook (210) when, in particular as soon as, the suction unit (100) is moved further along the removal direction (302) from the receptacle (201) of the base station (200) after reaching the end position of the compression element (106).

4. Base station (200) according to claim 3, wherein the hook (210) is designed such that the predefined force threshold value which must be overcome to deflect the hook (210) is reached, in particular is only reached when the compression element (106) has reached the end position.

5. Base station (200) according to one of the preceding claims, wherein the compression element (106) comprises a compression ring.

6. Base station (200) according to one of the preceding claims, wherein the hook (210) is configured to mechanically act on a button (111) of the operating element (110, 111) of the suction unit (100).

7. A system (300) comprising - a suction unit (100) having a collection area (103) for receiving dirt sucked up by the suction unit (100); wherein the suction unit (100) has a compression function for compressing dirt arranged in the collection area (103); and - a base station (200) for the suction unit (100), wherein the base station (200) is designed according to one of the preceding claims.

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