CN113892849A

CN113892849A - Suction cleaning device

Info

Publication number: CN113892849A
Application number: CN202110598437.XA
Authority: CN
Inventors: B.弗莱克佐克; P.拉克什曼; S.兰根伯格; J.巴豪森; W.迈尔
Original assignee: Vorwerk and Co Interholding GmbH
Current assignee: Vorwerk and Co Interholding GmbH
Priority date: 2020-06-22
Filing date: 2021-05-31
Publication date: 2022-01-07
Also published as: DE102020116426A1

Abstract

The invention relates to a suction cleaning device (1) having a housing (2) which encloses a fan (3), a suction channel (4) and a suction chamber (5), the housing has a regeneration opening (6) which can be brought into flow connection with the suction chamber (5) and which can be closed by means of a movable housing closure element (7), wherein, during a suction cleaning operation of the suction cleaning device (1), suction can be conveyed from a surface to be cleaned into a suction chamber (5) via a suction channel (4), and wherein, during the regeneration operation of the suction cleaning device (1), the collected suction can be conveyed from the suction chamber (5) through the opened regeneration opening (6) into a base station (8) which is fluidically connected to the suction cleaning device (1), wherein the suction channel (4) is provided with a movable channel closing element (9). In order to regenerate not only the coarse region (21) but also the fine dust region (20) and/or the filter element (19) of the suction matter chamber (5), it is proposed that the suction cleaning device (1) has a switching device which is designed to switch the channel closing element (9) and the housing closing element (7) in succession in time during a regeneration operation such that, when the suction channel (4) is open, the regeneration opening (6) is first opened by moving the housing closing element (7) and the suction channel (4) is subsequently closed by moving the channel closing element (9).

Description

Suction cleaning device

Technical Field

The invention relates to a suction cleaning device having a housing which encloses a fan, a suction channel and a suction chamber, the housing having a regeneration opening which can be brought into flow connection with the suction chamber and which can be closed by means of a movable housing closure element, wherein during a suction cleaning operation of the suction cleaning device, suction can be conveyed from a surface to be cleaned through the suction channel into the suction chamber, and wherein during a regeneration operation of the suction cleaning device, collected suction can be conveyed from the suction chamber through the open regeneration opening into a base station which is fluidically connected to the suction cleaning device, wherein the suction channel is equipped with the movable channel closure element.

The invention further relates to a system having such an extraction cleaning device and a base station, wherein the base station has a base station extraction chamber and a base station channel for establishing a flow connection between the base station extraction chamber and a regeneration opening of the extraction cleaning device.

Background

Suction cleaning devices of the above-mentioned type and base stations for regenerating the suction chambers of such suction cleaning devices are well known in the prior art. To clean the suction chamber, a suction cleaning device is connected to the base station. The suction can then be transferred from the suction chamber of the suction cleaning device into the base station suction chamber of the base station. For example, a fan of a base station, an external fan or a fan of the suction cleaning device itself can be used for regenerating the suction chamber of the suction cleaning device, wherein in the last-mentioned case a flow reversal is necessary in order to generate an air flow opposite to the usual flow direction during the suction operation of the suction cleaning device. The suction cleaning device is coupled to the base station in such a way that the corresponding housing openings are connected and suction can flow from the suction chamber of the suction cleaning device through the base station channel into the base station suction chamber of the base station.

Disadvantageously, air is also sucked in via the suction channel as a result of the negative pressure generated in the suction chamber. The air flow usually flows through only the coarse region of the suction chamber and not through the fine dust region with the filter element, which is usually arranged between the suction chamber of the suction cleaning device and the fan. The regeneration air flow thus does not completely flush the suction space on its way from the suction channel to the base station channel, but only in that area in which coarse material is collected. Whereas the fine dust on or in the immediate vicinity of the filter element is not captured and carried away by the regeneration air flow. Overall, this results in incomplete regeneration of the aspirate lumen.

Disclosure of Invention

Based on the prior art described above, the object of the invention is therefore to improve a suction cleaning device in such a way that its suction chamber is not only regenerated in the coarse area, but also the suction can be removed optimally from the fine dust area including the filter element.

In order to solve this problem, it is proposed that the suction cleaning device has a switching device which is designed to switch the channel closure element and the housing closure element one after the other in time during the regeneration operation such that, when the suction channel is open, the regeneration opening is first opened by moving the housing closure element and the suction channel is subsequently closed by moving the channel closure element, wherein the channel closure element is in operative connection with the housing closure element such that a movement of the housing closure element causes a movement of the channel closure element, such that a closing of the channel closure element is produced by an opening of the housing closure element and an opening of the channel closure element is caused by a closing of the housing closure element.

It is therefore proposed for the regeneration process of the suction cleaning device that a time interval exists between the movement of the housing closure element and the movement of the channel closure element, so that, when the suction channel of the suction cleaning device is flown through, only the coarse region of the suction chamber is regenerated or mainly regenerated first, and only when the channel closure element closes the suction channel after a time offset is the fine dust region with the filter element additionally regenerated. According to this embodiment, the cleaning process therefore takes place in a time sequence, wherein the fine dust region is cleaned and the coarse material region is cleaned in succession. If a bypass is additionally used (as described below), the regeneration of the coarse material region and the fine dust region can be completely separated. Otherwise, the regeneration of the different regions of the suction matter chamber has at least a temporal overlap, wherein firstly substantially only coarse material is conveyed into the base station and subsequently fine dust is additionally conveyed away when the channel closing element is moved into the closed position of the suction channel. For switching the flow path, the suction cleaning device has a switching device which is suitable and arranged for switching the channel closing element, the housing closing element and, if appropriate, a further closing element for one or more bypasses. The control device for such a switching device can belong to a suction cleaning apparatus or a base station. Advantageously, the regeneration sequence is determined in such a way that coarse material is removed first, in order to thus free a flow path for removing fine dust. In this case, it has proven advantageous to control the flow path over time, which firstly provides for a coarse material removal of, for example, 30 seconds and only then a fine dust removal. It can also be provided that coarse dust removal and fine dust removal are carried out alternately and repeatedly, for example after a defined time window, for example 30 seconds of coarse dust removal, 30 seconds of fine dust removal, etc.

It is proposed that the channel closing element be operatively connected to the housing closing element in such a way that a displacement of the housing closing element causes a displacement of the channel closing element. The suction cleaning device is thus designed such that the passage closing element is automatically moved when the housing closing element is moved. The operative connection between the housing closure element and the channel closure element can be a mechanical, electrical, electromechanical, magnetic, pneumatic or hydraulic operative connection. It is important that the displacement functions of these closure elements are coupled in such a way that the opening of the housing closure element brings about the closing of the passage closure element and the closing of the housing closure element brings about the opening of the passage closure element. The closing element for the regeneration operation of the suction cleaning device is thereby brought into a position in which an optimum regeneration of the suction chamber can be achieved, which comprises the fine dust region and/or the filter element located in the fine dust region. When the channel closing element is open, the regeneration air flow flowing through the suction channel is prevented, so that instead, for example, in the case of an auxiliary air opening arranged on the clean air side of the filter element, in particular a compressed air outlet of a fan assigned to the suction cleaning device during suction operation, the regeneration air flow can flow through the fine dust region and the filter element. The flow speed of the regeneration air flow through the filter element and/or the fine dust region of the suction chamber can be increased by additionally arranging a rotary air nozzle upstream of the suction chamber with respect to the flow direction of the regeneration air flow, for example. The regeneration air flow flowing into the suction cleaning device through the auxiliary air opening can flow through the rotary air nozzle and thereby cause a rotation of the rotary air nozzle. The regeneration air flow flowing out of the rotary air nozzle then surrounds the filter element from the clean air side and removes fine dust from the filter element and/or the fine dust region on the opposite side. The cleaned fine dust can then pass through the regeneration opening of the suction cleaning device and through the base station channel of the base station into the base station suction chamber of the base station. In this case, the regeneration air flow preferably flows through not only the fine dust region but also the coarse material region of the suction chamber of the suction cleaning appliance. If the suction cleaning device is a cyclone with a centrifugal separator, the regeneration air flow can also flow sequentially first through the fine dust region, then through the separator and finally through the coarse region of the suction matter chamber to the regeneration opening of the suction cleaning device. Alternatively, there may also be a direct flow connection between the fine dust region of the suction chamber and the regeneration opening, so that the fine dust is guided past the coarse region and, if necessary, past the separator into the base station. For this purpose, in this case, a further flow channel is required in the suction cleaning device, which provides a bypass to the coarse dirt region and, if appropriate, to the separator. However, it is preferred that the regeneration air flow is at least partially also conducted through the coarse dirt region of the suction chamber and possibly also through the separator. According to a further variant, it is possible, for example, if a bypass is used, that the flow separator is not traversed, but the coarse dirt region of the suction chamber is traversed. In this case, fine dust from the fine dust area is guided past the separator into the coarse dirt area of the suction chamber and subsequently to the base station. However, it is preferred to include the optionally present separator in the regeneration process, so that in this case the regeneration air flow flows through the fine dust region, the separator and the coarse dirt region of the suction chamber. This variant also has the advantage that additional flow paths, in particular bypass channels, can be dispensed with. This saves installation space as well as cost and weight within the housing of the suction cleaning device.

It is proposed that the channel closing element be displaceable relative to the suction channel. In particular, the channel closing element can be mounted slidably. In principle, the passage closure element can also be moved in other types and manners, for example by pivoting, from the closed position into the open position and vice versa. However, a sliding movement is preferably proposed here, in which the duct closing element is mounted in a sliding manner in a corresponding partial region of the device housing. Alternatively, the channel closing element can also be mounted in the suction cleaning device with low friction, for example by means of rollers or spherical elements.

It is proposed that the channel closing element be operatively connected to the housing closing element by means of a mechanical operating device. The mechanical activation device can, for example, have a pulling element, a pushing element or a pushing and pulling element or a transmission. It is important that the mechanical action means are adapted to transmit a force to the passage closure element that moves the housing closure element, so that the passage closure element is also moved when the housing closure element is moved.

In particular, it is proposed that the housing closure element is mounted pivotably on a rotary shaft and that the channel closure element is connected in a force-transmitting manner to the housing closure element and/or to the rotary shaft. According to this embodiment, the housing closing element closing the regeneration opening of the suction cleaning device is pivotably mounted and, due to the mechanical operative connection with the channel closing element, a movement of the channel closing element takes place simultaneously when the housing closing element is moved or the rotary shaft is rotated. According to this embodiment, the movement of the passage closure element is coupled to the opening movement of the pivoting housing closure element. The coupling is such that, in particular, both tensile and shear forces can be transmitted by the coupling. The operative connection of the closure elements can also be increased or reduced by a transmission in order to be able to adjust and optimize the respective actuating force and/or actuating path and the positioning accuracy. The time interval between the displacement movements of the housing closure element and the channel closure element can likewise be set by means of the transmission.

According to a preferred embodiment, it is proposed that the channel closing element has a flexible strip which has, on the one hand, a closing region which closes the suction channel and, on the other hand, a connection region for mechanical coupling to the housing closing element or to the rotational axis of the housing closing element. The channel closing element can in particular be a flexible plastic strip. The flexible strip is preferably adapted to transfer both tensile forces and shear forces from the housing closure element to the channel closure element and vice versa. This means that the strap must have an inherent stiffness, at least to some extent, so that such forces can be transmitted. In particular, flexible plastics such as PVC are suitable for constructing such a belt. Alternatively, metal strips suitable for transmitting tensile and shear forces can also be used as flexible bands. Preferably, the channel closing element is formed by an end region of the flexible strip, which can be moved in front of the suction opening of the suction channel or into the suction channel in order to close the suction channel. The end region of the strap facing away from this end region can be coupled directly to the housing closure element or its pivot axis or connected to the housing closure element or its pivot axis via an intermediately arranged force transmission element. If the strap is designed only for transmitting tensile forces and not shear forces, a spring element may additionally be provided which is adapted to move the strap in a direction opposite to the tensile forces. This direction generally corresponds to a preferred position of the channel closing element, here for example an open state of the suction channel (which enables the suction cleaning device to resume the suction operation after the regeneration process has been completed).

It is proposed that the channel closing element is mounted in a sliding manner in a guide slot which is formed between the housing closing element and the suction channel. The guide runners stabilize the channel closing element, so that, for example, tensile and shear forces can be transmitted effectively despite the flexible nature of the belt. The guide slot can be, for example, a guide slot formed in the housing of the suction cleaning device, in which the belt is moved in a sliding manner.

Finally, it is proposed that the vacuum cleaning device has an interface for connection to a base station, the interface having an interface element which is operatively connected to the housing closure element and/or the channel closure element and which can be actuated in order to close the suction channel by means of the channel closure element when the vacuum cleaning device is connected to the base station. The interface can also simultaneously have a regeneration opening, to which the housing opening of the base station can be correspondingly coupled in order to connect the regeneration channel of the suction cleaning device with the corresponding flow channel of the base station. The proposed interface element of the interface can be, for example, a contact switch which is automatically actuated when the suction cleaning device is connected to the base station and causes a movement of the channel closing element. For example, in a simple case, the housing closure element and thus also the channel closure element, which is in operative connection with the housing closure element, can be moved directly by actuating the interface element. Alternatively, a direct action can also be exerted directly on the channel closing element. Furthermore, it can be provided that the interface element has an actuator or an actuating actuator which moves the channel closure element and/or the housing closure element mechanically, electrically, electromechanically, pneumatically, hydraulically or magnetically. It can be provided that such an actuator is assigned to the base station and that the interface of the suction cleaning device provides an actuating element for the actuator.

In addition to the suction cleaning device described above, the invention also proposes a system having a suction cleaning device and a base station, wherein the base station has a base station suction chamber and a base station channel for establishing a flow connection between the base station suction chamber and a regeneration opening of the suction cleaning device, and wherein the base station has an actuating element for acting on an interface element and/or a housing closure element and/or a channel closure element of the suction cleaning device connected to the base station. The aforementioned advantages and features of the extractor cleaning device are correspondingly applicable to a system having such an extractor cleaning device and a base station. For avoiding redundancy, reference is therefore made to the preceding statements regarding the extractor cleaning device and the base station.

In particular, it is proposed that the suction chamber of the suction cleaning device and the base station suction chamber of the base station are in flow connection with one another when the regeneration opening is opened by means of the housing closure element and the suction channel is closed by means of the channel closure element, so that a regeneration air flow for regenerating the suction chamber can flow into the base station suction chamber without flowing through the suction channel through the fine dust region of the suction chamber having the filter element and/or the coarse material region of the suction chamber and subsequently through the regeneration opening of the suction cleaning device and the base station channel of the base station.

Drawings

The present invention is illustrated in detail below with reference to examples. In the drawings:

figure 1 shows a system according to the invention consisting of a suction cleaning device and a base station;

FIG. 2 illustrates a localized area of the suction cleaning device and base station during regeneration operation;

figure 3 shows a detail of a partial region of the channel closure element in the open position with the suction cleaning device;

fig. 4 shows a detail similar to fig. 3 with the channel closing element in a closed position;

FIG. 5 shows an enlarged view of the channel closure element in the open position;

fig. 6 shows an enlarged view of the channel closing element in the closed position.

Detailed Description

Fig. 1 shows an exemplary system according to the invention with a suction cleaning device 1 and a base station 8. The suction cleaning device 1 is here, for example, a handheld vacuum cleaner of the type customary in household chores, having a base device 22, an accessory device 23 detachably connected thereto, a preferably variable-length handle 25 and a handle 26 on which a switch 27 is arranged, by means of which a user can, for example, activate and deactivate the suction cleaning device 1, select a power level of the fan 3 of the suction cleaning device 1, etc. The suction cleaning device 1 also has a housing 2 and a suction chamber 5 arranged therein, into which suction such as dust and dirt can be sucked. Here, the fan 3 is used to generate a negative pressure at the suction port 24 of the accessory device 23. The suction cleaning device 1 is also designed here as a cyclone with a separator 29, for example. The suction chambers 5 of the accessory device 23 and the base device 22 are connected to one another by means of the suction channel 4, so that suction can be introduced into the suction chambers 5 from the surface to be cleaned. The aspirate chamber 5 has a regeneration opening 6 with a housing closure element 7. The housing closure element 7 is here, for example, a pivotable flap which can be pivoted and releases the regeneration opening 6 in order to remove the aspirate from the aspirate chamber 5. The housing closure element 7 pivots about a rotational axis 10. The regeneration opening 6 is located in the region of an interface 14 for arranging the suction cleaning device 1 on the base station 8. The interface 14 has an interface element 15 which can be actuated by a corresponding actuating element 18 of the base station 8. The principle of action is explained in detail later with reference to fig. 3 to 6.

The base station 8 is used for carrying out service operations on the suction cleaning device 1, in particular for emptying the suction chamber 5 of the suction cleaning device 1. The base station 8 can also perform other tasks, for example, charging a battery of the suction cleaning device 1, providing different accessory devices 23 for the suction cleaning device 1, etc. In fig. 1, the suction cleaning device 1 is connected to a base station 8, i.e. for example, is docked on a part area of the base station 8 designated for this purpose. Between the suction cleaning device 1 and the base station 8 there is an interface element 15 (see fig. 3 and 4) of the suction cleaning device 1, which serves as a contact switch and can detect a contact of the suction cleaning device 1 with the base station 8. The base station 8 also has a base station fan 31 and a base station suction chamber 16 for receiving suction from the suction chamber 5 of the suction cleaning device 1. The base station channel 17 is guided from the base station suction space 16 to the outside and can be closed by means of a movable base station closure element 30. The base station closure element 30 can here likewise be pivoted about the axis of rotation 10, for example. The rotational axes 10 of the suction cleaning device 1 and of the base station 8 can be aligned with one another, for example, in such a way that partial regions of the base station 8 forming respective supports for the rotational axes 10 engage in respective recesses of the suction cleaning device 1, so that the rotational axes 10 of the suction cleaning device 1 and of the base station 8 are oriented in a common direction with one another, and the housing closure element 7 and the base station closure element 30 can be pivoted coaxially about the common rotational axis 10. As an alternative to using the base station fan 31 of the base station 8 itself, the base station 8 may also be designed purely passive, i.e. without the base station fan 31. In this case, for example, an external fan or also the fan 3 of the suction cleaning device 1 can be used to generate a negative pressure in the base station suction chamber 16.

In principle, two different designs for the position of the suction chamber 5 in the housing 2 of the suction cleaning device 1 and/or for the position of the base station suction chamber 16 in the base station 8 are also possible. On the one hand, the wall of the suction chamber 5 can directly adjoin the outer wall of the housing 2 of the suction cleaning device 1, as is shown, for example. In this case, the regeneration opening 6 of the suction chamber 5 is at the same time an opening of the housing 2 of the suction cleaning device 1. The base station 8 may also be designed similarly. The base station path 17 can be omitted here. However, it is expedient to provide a flow channel at least in the suction cleaning device 1 or in the base station 8 in order to be able to effect pivoting of the housing closure element 7 and the base station closure element 30 without limiting the volume of the suction chamber 5 and/or the base station suction chamber 16.

Fig. 2 shows a partial region of the suction cleaning device 1 and a partial region of the base station 8. The boundary between the extractor cleaning device 1 and the base station 8 is indicated by a dashed line. The line marks the transition between the suction cleaning device 1 and the base station 8. The shown partial region of the suction cleaning device 1 has a separator 29 for separating the suction from the air flow sucked into the suction cleaning device 1. The suction chamber 5 and the fan 3 are associated with a separator 29. During the suction cleaning operation of the suction cleaning device 1, the suction material is conducted from the suction opening 24 of the attachment device 23 into the suction channel 4 and from there into the separator 29, in which the suction material is separated from the circulating air flow into the coarse region 21 of the suction material chamber 5, and the precleaned air, which in some cases is also contaminated with fine dust, continues to flow to the fine dust region 20 with the filter element 19. Subsequently, the air reaches the fan 3 and leaves the housing of the suction cleaning device 1 through the auxiliary air opening 28. In order to be able to remove the suction material collected in the coarse material region 21 and the fine dust region 20 from the suction material chamber 5 of the suction cleaning device 1 in the course of the regeneration process, the suction cleaning device 1 has a regeneration opening 6 which enables the suction material chamber 5 and the suction material located therein to be accessed from the outside. For carrying out the regeneration process, the suction channel 4 of the suction cleaning device 1 can be closed by means of a channel closing element 9, which has an end-side closing region 11 and a connecting region 12, which acts on and is mechanically operatively connected to an interface element 15, as is shown in detail in fig. 3 to 6.

To carry out the regeneration of the suction chamber 5, the suction cleaning device 1 and the base station 8 are connected to one another. In this state, the regeneration opening 6 of the suction chamber 5 of the suction cleaning device 1 is initially also closed by means of the housing closure element 7. Furthermore, the base station closing element 30 of the base station 8 is also in the closed position. Subsequently, the housing closure element 7 and the base station closure element 30 can be moved from their closed position into the open position about the common axis of rotation 10.

Fig. 3 and 4 show corresponding partial regions of the suction cleaning device 1 and of the base station 8 in the closed position (fig. 3) or in the open position (fig. 4) of the closure elements 7, 30. As shown, the channel closing element 9 for closing the suction channel 4 during the regeneration process is guided in the guide channel 13. The guide chute 13 leads from a section of the suction channel 4 below the coarse material region 21 of the suction chamber 5 to the interface element 15. The interface element 15 is mounted rotatably about the axis of rotation 10 and rotates together when the housing closure element 7 and the base station closure element 30 are pivoted, so that the suction channel 4 is simultaneously closed by means of the channel closure element 9 when the regeneration opening 6 is open. In this way, the suction channel 4 is closed before the regeneration process begins, so that air reaches the base station 8, for example starting from the auxiliary air opening 28, while flowing through the fine dust region 20. While the suction channel 4 connecting the suction lumen 5 with the accessory device 23 is no longer flown through.

The invention now functions in such a way that the suction cleaning device 1 and the base station 8 are initially completely separated from one another with respect to their flow path. The closure elements 7, 30 on both sides close the suction chamber 5 of the suction cleaning device 1 or the base station channel 17 of the base station 8. In this state, the suction cleaning device 1 is then connected to the base station 8, in order to subsequently carry out a regeneration of the suction chamber 5 by means of the base station 8. By connecting the suction cleaning device 1 to the base station 8 according to fig. 3 and 4, the actuating element 18 strikes the interface element 15 of the suction cleaning device 1. Thereby, the interface element 15 rotates about the rotation axis 10 and moves the housing closing element 7 of the suction cleaning device 1, the base station closing element 30 of the base station 8 and the passage closing element 9 of the suction cleaning device 1. According to the exemplary embodiment shown here, the movement of the

closure elements

7, 9, 30 is effected purely mechanically by the force exerted when connecting the suction cleaning device 1 to the base station 8. Alternatively, the interface element 15 may of course also be a contact switch which triggers the actuation of a drive motor which is provided to move the

closure element

7, 9, 30. The drive motor is preferably part of the base station 8. In this embodiment, in particular a temporally offset movement of the

closure elements

7, 9, 30 relative to one another, in particular a time offset between the housing closure element 7 and the base station closure element 30 on the one hand and the channel closure element 9 on the other hand, can be achieved. For example, the closure elements 7, 30 are first opened in order to remove coarse material, and subsequently the suction channel 4 is closed by means of the channel closure element 9 in order to remove fine dust.

Closing the suction channel 4 according to fig. 4 not only allows suction from the coarse area 21 of the suction chamber 5 to be removed, but also from the fine dust area 20 and the filter element 19. For this purpose, the suction chamber 5, which comprises the filter element 19 and the fine dust region 20, is traversed from the rear, i.e. in the direction of the fan 3, so that the suction falls off the filter element 19 and the fine dust region 20 and can flow into the base station 8 via the separator 29 and the coarse material region 21 of the suction chamber 5.

In order to design the flow path during the regeneration process, there is an alternative, not shown further here, in which the separator 29 is bypassed by means of a bypass and the regeneration air flow passes only through the filter element 19, the fine dust region 20 and the coarse material region 21 of the suction chamber 5. Thereby guiding the flow past the separator 29. Furthermore, not only the separator 29 but also the coarse region 21 of the suction chamber 5 can be flowed around and only the filter element 19 and the fine dust region 20 can be regenerated. For example, in this case, it is possible in the first regeneration step to carry out only the regeneration of the filter element 19 and the fine dust region 20, after which the regeneration of the separator 29 and/or the coarse material region 21 is carried out. Such regeneration in a plurality of steps, which are temporally successive to one another, requires respective individual flow channels and valves for switching the flow paths. For this purpose, switching devices are also required, which switch the flow paths over time.

The variant shown in the figures is advantageous, however, in that additional structures, such as bypass channels, can be dispensed with. Particularly preferably, the regeneration of the fine dust region 20 and the coarse material region 21 takes place here with a time delay relative to one another, in particular the regeneration of the coarse material region 21 takes place first and then the fine dust region 20 and the filter element 19. In order to regenerate only the coarse material region 21, the suction channel 4 can initially be left open, so that when the base station fan 31 is operated, air is drawn in mainly through the suction channel 4 and flows essentially only through the coarse material region 21, while the flow through the fine dust region 20 and the filter element 19 is negligible. Only then is the channel closing element 9 pushed into the suction channel 4 in order to block the flow path through the suction channel 4, and the air flows to the base station 8 only through the filter element 19 and the fine dust region 20. In order to achieve a temporally successive switching of the flow paths, a switching device or a gear is also required, in addition to the embodiment shown in the figure. It is particularly advantageous to remove the coarse material first from the coarse material region 21, in order to be able to subsequently realize a flow path for the suction removed from the filter element 19 and the fine dust region 20. Time control, for example switching the flow paths after a defined time interval, for example after a time window of the order of 30 seconds, 1 minute or the like, is advantageous. In particular, a regularly repeated switchover can also be carried out, in which the coarse regeneration path and the fine dust regeneration path are alternately switched on a plurality of times.

The channel closing element 9 is here, for example, a flexible strip, in particular made of plastic or metal, which is mounted in a sliding manner in the guide chute 13. The inherent stiffness of the channel closing element 9 allows for the transfer of tensile and shear forces from the connection region 12 of the channel closing element 9 to the closure region 11 of the channel closing element 9. The guide runner 13 may be a channel or a groove in the housing 2 of the suction cleaning device 1. The movement of the passage closure element 9 can, as in the example shown here, take place simultaneously with the movement of the housing closure element 7 and the base station closure element 30, but this is not essential. Alternatively, for example, a transmission can be used which temporally offsets the displacement movements from one another, so that the aforementioned coarse material removal can be carried out first and only then the suction channel 4 is closed by means of the channel closing element 9 in order to regenerate the fine dust region 20 and the filter element 19 as well.

List of reference numerals

1 suction cleaning device

2 casing

3 Fan

4 suction channel

5 suction object cavity

6 regeneration opening

7 housing closure element

8 base station

9 channel closure element

10 rotating shaft

11 enclosed area

12 connection region

13 guide chute

14 interface

15 interface element

16 base station suction object cavity

17 base station channel

18 operating element

19 Filter element

20 fine dust area

21 coarse material area

22 basic equipment

23 Accessory device

24 suction port

25 handle

26 handle

27 switch

28 auxiliary air vent

29 separator

30 base station enclosure element

31 base station fan

Claims

1. Suction cleaning device (1) having a housing (2) which encloses a fan (3), a suction channel (4) and a suction chamber (5), having a regeneration opening (6) which can be brought into flow connection with the suction chamber (5), which regeneration opening can be closed by means of a movable housing closure element (7), wherein, during a suction cleaning operation of the suction cleaning device (1), suction can be conveyed from a surface to be cleaned through the suction channel (4) into the suction chamber (5), and wherein, during a regeneration operation of the suction cleaning device (1), collected suction can be conveyed from the suction chamber (5) through the open regeneration opening (6) into a base station (8) which is fluidically connected to the suction cleaning device (1), wherein the suction channel (4) is provided with a movable channel closure element (9), characterized in that the suction cleaning device (1) has a switching device which is provided, during the regeneration operation, the passage closing element (9) and the housing closing element (7) are switched over in succession in time, so that when the suction channel (4) is opened, the regeneration opening (6) is first opened by moving the housing closure element (7), and subsequently closing the suction channel (4) by moving the channel closing element (9), wherein the channel closing element (9) is operatively connected to the housing closing element (7), such that a movement of the housing closure element (7) causes a movement of the passage closure element (9), whereby the closing of the passage closure element (9) is brought about by the opening of the housing closure element (7), and the opening of the passage closure element (9) is brought about by the closing of the housing closure element (7).

2. The suction cleaning device (1) according to claim 1, characterized in that the channel closing element (9) is movable relative to the suction channel (4).

3. The suction cleaning device (1) according to claim 2, characterized in that the passage closing element (9) is slidingly supported.

4. The suction cleaning device (1) according to claim 1, characterized in that the passage closure element (9) is in operative connection with the housing closure element (7) by mechanical action means.

5. The suction cleaning device (1) according to claim 4, characterized in that the housing closure element (7) is pivotably supported on a rotational shaft (10) and the passage closure element (9) is connected in a force-transmitting manner to the housing closure element (7) and/or to the rotational shaft (10).

6. The suction cleaning device (1) according to claim 1, characterized in that the passage closing element (9) has a flexible strip with, on the one hand, a closing region (11) closing the suction passage (4) and, on the other hand, a connection region (12) for mechanical coupling with the housing closing element (7).

7. The suction cleaning device (1) according to claim 6, characterized in that the flexible belt is a plastic belt.

8. The suction cleaning device (1) according to claim 1, characterized in that the channel closing element (9) is slidably supported in a guide chute (13) which is configured between the housing closing element (7) and the suction channel (4).

9. The suction cleaning device (1) according to claim 1, characterized in that the suction cleaning device (1) has an interface (14) for connection to a base station (8), wherein the interface (14) has an interface element (15) which is operatively connected to the housing closure element (7) and/or the channel closure element (9) and which can be actuated in order to close the suction channel (4) by means of the channel closure element (9) when the suction cleaning device (1) is connected to the base station (8).

10. System with an extractor cleaning device (1) and a base station (8) designed according to one of claims 1 to 9, wherein the base station (8) has a base station suction chamber (16) and a base station channel (17) for establishing a flow connection between the base station suction chamber (16) and a regeneration opening (6) of the extractor cleaning device (1), and wherein the base station (8) has an actuating element (18) for acting on an interface element (15) and/or a housing closure element (7) and/or a channel closure element (9) of an extractor cleaning device (1) connected to the base station (8).

11. System according to claim 10, characterized in that, when the regeneration opening (6) is opened by means of the housing closure element (7) and the suction channel (4) is closed by means of the channel closure element (9), the suction chamber (5) of the suction cleaning device (1) and the base station suction chamber (16) of the base station (8) are in flow connection with each other, so that a regeneration air flow for regenerating the suction chamber (5) can flow through the fine dust region (20) of the suction chamber (5) having the filter element (19) and/or the coarse material region (21) of the suction chamber (5) without flowing through the suction channel (4) and subsequently through the regeneration opening (6) of the suction cleaning device (1) and the base station channel (17) of the base station (8) into the base station suction chamber (16).