Suction cleaning device

Abstract

The invention relates to a vacuum cleaning device (10) with a device body (12) which has a suction container (20) with a receiving chamber (24) for suction material and a suction head (22) arranged on the suction container (20) with a suction unit (30) which is in flow communication with the receiving chamber (24) via a filter device (32) to generate a suction flow, wherein the device body (12) has a suction inlet (26) and an air outlet (44), wherein the suction inlet (26) is in flow communication with the receiving chamber (24) and the suction unit (30) is in flow communication with the air outlet (44). In order to further develop the suction cleaning device (10) so that it has easier handling, it is proposed that the filter device (32) form a permanent filter (78) which is held on an underside (60) of the suction head (22) facing the receiving chamber (24) in a way that can be detached without tools.

Description

[0001] The invention relates to a vacuum cleaning device with a device body comprising a suction container with a receiving chamber for suction material and a suction head arranged on the suction container with a suction unit which is in flow communication with the receiving chamber via a filter device to generate a suction flow, wherein the device body has a suction inlet and an air outlet, wherein the suction inlet is in flow communication with the receiving chamber and the suction unit is in flow communication with the air outlet.

[0002] Such cleaning devices are known, for example, from WO 2006 / 108460 A1 and DE 10 2020 132 594 A1. They comprise a device body that includes a container with a receiving chamber for the material being cleaned and a suction head with a suction unit arranged on the container. The device body has a suction inlet that is in airflow connection with the receiving chamber. The device body also has an air outlet, with the suction unit being in airflow connection with the air outlet. The receiving chamber can be supplied with a suction flow by means of the suction unit, under the influence of which suction air laden with cleaning material can be drawn in through the suction inlet. The cleaning material can be separated from the suction air and collected in the receiving chamber by means of a filter device arranged in the airflow path between the receiving chamber and the suction unit.The suction air can then be released from the suction unit to the outside via the air outlet.

[0003] The filter system separates the collected material, such as dirt and dust particles, from the suction air. A filter bag, which is inserted into the collection container, is commonly used as the filter system. During operation of the vacuum cleaner, more and more collected material accumulates in the filter system. Therefore, when using a filter bag, it must be replaced after a certain period of use. This is often difficult for the user, thus complicating the operation of the vacuum cleaner.

[0004] The object of the present invention is therefore to further develop a vacuum cleaning device of the type mentioned at the outset in such a way that it has simpler handling.

[0005] This problem is solved in a suction cleaning device of the generic type according to the invention by the filter device forming a permanent filter which is held on an underside of the suction head facing the receiving chamber in a way that can be detached without tools.

[0006] The suction cleaning device according to the invention uses a permanent filter, i.e., a reusable filter, which is held in place on the underside of the suction head facing the collection chamber and can be detached without tools. This allows the user to remove the filter from the underside of the suction head and clean it as needed, without the use of any tools. Cleaning can be carried out, for example, by shaking out the permanent filter. The cleaned permanent filter can then be reattached to the underside of the suction head without the use of any tools. Access to the permanent filter is very easy for the user, as they only need to lift the suction head from the collection container to gain direct access to the permanent filter.

[0007] It is advantageous if the suction head has a filter holder on its underside that projects into the collection container, to which the permanent filter is attached in a tool-free manner. With this embodiment of the invention, by lifting the suction head from the collection container, the user gains access to the filter holder, which projects into the collection container during normal operation of the vacuum cleaning device and to which the permanent filter is attached in a tool-free manner.

[0008] In a preferred embodiment of the invention, the filter holder forms a ring wall that protrudes from a bottom wall of the suction head.

[0009] Preferably, the ring wall forms a collar facing away from the bottom wall of the suction head, and the permanent filter has a retaining ring that can be placed on the collar.

[0010] The retaining ring can, for example, form a ring groove into which the collar dips.

[0011] It is advantageous if pairs of interlocking retaining elements are arranged on the outside of the ring wall and on the retaining ring. The permanent filter can be secured to the ring wall of the filter holder by means of these retaining elements.

[0012] In an advantageous embodiment of the invention, at least one pair of the interacting retaining elements forms a projection and a recess that receives the projection. The projection can, for example, be cone-shaped or rib-shaped and be received by a complementarily shaped recess.

[0013] It is advantageous if at least one protrusion is located on the outer surface of the ring wall and the corresponding recess on the permanent filter's retaining ring is positioned. This allows the user to easily attach the permanent filter to the filter holder.

[0014] Alternatively or additionally, at least one pair of the interacting retaining elements can be designed to form a projection and a snap-in or locking element that engages behind the projection. This allows for particularly easy attachment and removal of the permanent filter from the filter holder.

[0015] The snap or locking element can be designed as a retaining clip.

[0016] It is advantageous if the snap or locking element is located on the retaining ring of the permanent filter and the projection interacting with the snap or locking element is located on the outside of the ring wall of the filter holder.

[0017] It is particularly advantageous if the ring wall has two opposing wall sections, each with at least one retaining element that interacts with a retaining element of the retaining ring. For example, it can be provided that at least one retaining element in the form of a projection is arranged on a first wall section of the ring wall, interacting with a retaining element of the retaining ring designed as a recess, and that at least one projection is arranged on a second wall section of the ring wall opposite the first wall section, interacting with a retaining element of the retaining ring designed as a snap or locking element.Such a design allows the user to first hook the retaining ring onto a first wall section of the ring wall and then place the retaining ring onto the ring wall, whereby the snap or locking element of the retaining ring engages behind the projection arranged on the opposite second wall section of the ring wall.

[0018] In a preferred embodiment of the invention, the permanent filter comprises a filter basket on which a filter element in the form of a flat structure is arranged. The filter basket forms a support structure for the flat structure and can be immersed in the collection container, supporting the flat structure on its outer surface facing the collection container.

[0019] The surface structure can, for example, be designed as a filter fabric.

[0020] The following description of a preferred embodiment of the invention, in conjunction with the drawing, serves for further explanation. The drawing shows: Figure 1: a longitudinal sectional view of a vacuum cleaning device; Figure 2: a perspective view of a suction head of the vacuum cleaning device made of Figure 1 oblique view from the front; Figure 3: a perspective view of the suction head of the vacuum cleaning device made of Figure 1 A diagonal view from behind.

[0021] In the drawing, an advantageous embodiment of a suction cleaning device according to the invention is schematically depicted and is labelled with reference numeral 10.

[0022] The vacuum cleaning device 10 has a body 12 that can be moved along a surface 14. For this purpose, the body 12 has two wheels and two casters, wherein one Figure 1 Only a running wheel 16 and a running roller 18 are shown.

[0023] The device body 12 comprises a suction container 20, on which the running wheels and rollers are rotatably mounted, and a suction head 22, which is arranged on the suction container 20.

[0024] The suction container 20 has a receiving chamber 24 into which a suction inlet 26 opens, the suction inlet being arranged on a front face 28 of the device body 12. A suction hose (not shown in the drawing) can be connected to the suction inlet 26 in the usual manner.

[0025] The suction head 22 has a suction unit 30 which is in flow communication with the receiving chamber 24 via a filter device 32.

[0026] The receiving chamber 24 can be supplied with a suction flow by the suction unit 30, so that suction air laden with material to be vacuumed can be drawn into the receiving chamber 24 via the suction inlet 26. The material to be vacuumed can be, for example, dirt or dust particles.

[0027] To generate the suction flow, the suction unit 30 has an electric drive motor 34 and a suction blower 36, which can be rotated by the drive motor 34 about a blower axis 38 to generate the suction flow.

[0028] An end region of the drive motor 34, facing away from the suction blower 36, is surrounded by an outlet region 40 of the suction unit 30. An air outlet duct 42 connects to the outlet region 40 and extends to an air outlet 44. The air outlet is located on a rear side 46 of the device body 12. The suction air drawn into the receiving chamber 24, after the material being suctioned has been separated from the suction air by means of the filter device 32, can be discharged into the external space surrounding the vacuum cleaning device 10 via the air outlet duct 42 and the air outlet 44.

[0029] In the exemplary embodiment shown, the air outlet duct 42 has a first duct section 48 and a second duct section 50 arranged downstream of the first duct section 48 with respect to the flow direction of the suction air, to which a third duct section 52 is connected. The first duct section 48 extends from the outlet area 40 of the suction unit 30 towards the front 28 of the device body 12, and the second duct section 50, which is arranged directly above the first duct section 48, extends towards the rear 46 of the device body 12. A first sound-absorbing mat 54 is arranged in the first duct section 48 and a second sound-absorbing mat 56 is arranged in the second duct section 50. The third duct section 52 extends to the air outlet 44, with an air outlet filter 58 being positioned in the third duct section 52.

[0030] As can be seen particularly from the Figures 2 and 3 As can be clearly seen, the suction head 22 has a filter holder 64 on its underside 60 facing the receiving chamber 24, to which the filter assembly 32 is attached in a tool-free manner. The filter holder 64 has an annular wall 66 that projects from a bottom wall 62 of the suction head 22, is essentially rectangular in shape, and has a first narrow side 68 facing the rear 46 of the device body 12 and a second narrow side 70 opposite the first narrow side 68, as well as two opposing longitudinal sides 72, 74, by which the two narrow sides 68, 70 are connected. At its end facing away from the bottom wall 62, the annular wall 66 forms a collar 76 that defines the end face of the annular wall 66.

[0031] The filter assembly 32 forms a permanent filter 78, which has a retaining ring 80 to which a Figure 1The illustrated filter basket 82 is integrally connected. A surface structure in the form of a filter fabric 84 is arranged on the filter basket 82, which is located in the Figures 2 and 3 Only excerpts are shown to provide a better overview.

[0032] The retaining ring 80 forms a U-shaped annular groove 86 on its upper surface facing the collar 76, into which the collar 76 dips. On the first narrow side 68 of the ring wall 66, two retaining elements in the form of a first projection 88 and a second projection 90 are arranged, which interact in pairs with complementary retaining elements in the form of a first recess 92 and a second recess 94, so that the permanent filter 78 can be suspended from the projections 88, 90.

[0033] On the second narrow side 70, the ring wall has two further retaining elements in the form of a third projection 96 and a fourth projection 98, each of which interacts with an elastically deformable snap or detent element 100 or 102, respectively, which is arranged on the retaining ring 80. The snap or detent elements 100 and 102 each form a retaining clip and are integrally connected to one another via a web 104. This is particularly evident from Figure 2 clearly.

[0034] The permanent filter 78 can be easily connected to the filter holder 64 without the use of tools and, if necessary, detached from the filter holder 64. To connect the permanent filter 78 to the filter holder 64, the permanent filter 78 can first be hooked onto the first projection 88 and the second projection 90, and then pivoted towards the second narrow side 70 of the ring wall 66 so that the snap or locking elements 100, 102 can engage behind the third and fourth projections 96, 98 located on the second narrow side 70. In this state, the permanent filter 78 is mechanically held on the filter holder 64 of the suction head 22.

[0035] During operation of the vacuum cleaning device 10, debris increasingly accumulates on the dirty side of the permanent filter 78, necessitating cleaning after a certain period of use. To do this, the user can lift the suction head 22 from the debris container 20 with one hand and then detach the permanent filter 78 from the suction head 22 with the other hand by pressing the tab 104 with their thumb in the direction away from the bottom wall 62 of the suction head 22. This releases the snap or locking elements 100, 102 from the third projection 96 and the fourth projection 98, allowing the permanent filter 78 to then also be detached from the first projection 88 and the second projection 20. The user can then clean the permanent filter, for example by shaking it, and subsequently reattach it to the filter holder 64 without the use of any tools.

[0036] The vacuum cleaning device 10 is therefore characterized by easy handling, in particular by the easy removal and attachment of the permanent filter 78 to the underside of the suction head 22.

Claims

1. Vacuum cleaning device with a device body (12) comprising a suction container (20) with a receiving chamber (24) for suction material and a suction head (22) arranged on the suction container (20) with a suction unit (30) which is in flow communication with the receiving chamber (24) via a filter device (32) to generate a suction flow, wherein the device body (12) has a suction inlet (26) and an air outlet (44), wherein the suction inlet (26) is in flow communication with the receiving chamber (24) and the suction unit (30) is in flow communication with the air outlet (44), characterized by the fact that the filter device (32) forms a permanent filter (78) which is held on an underside (60) of the suction head (22) facing the receiving chamber (24) in a way that can be detached without tools.

2. Vacuum cleaning device according to claim 1, characterized by the fact thatthe suction head (22) has on its underside (60) a filter holder (64) projecting into the suction container (20), on which the permanent filter (78) is held in a way that can be detached without tools.

3. Vacuum cleaning device according to claim 2, characterized by the fact that the filter holder (64) has a ring wall (66) that protrudes from a bottom wall (62) of the suction head (22).

4. Vacuum cleaning device according to claim 3, characterized by the fact that the ring wall (66) forms a collar (76) facing away from the bottom wall (62) and the permanent filter (78) has a retaining ring (80) which can be placed on the collar (76).

5. Vacuum cleaning device according to claim 4, characterized by the fact that Retaining elements that interact in pairs are arranged on an outer side of the ring wall (66) and on the retaining ring (80).

6. Vacuum cleaning device according to claim 5, characterized by the fact thatat least one pair of the interacting retaining elements forms a projection (88, 90) and a recess (92, 94) to accommodate the projection (88, 90).

7. Vacuum cleaning device according to claim 6, characterized by the fact that at least one projection (88, 90) is located on the outside of the ring wall (66) and the recess (92, 94) interacting with this projection (88, 90) is located on the retaining ring (80).

8. Vacuum cleaning device according to claim 5, 6 or 7, characterized by the fact that at least one pair of the interacting retaining elements forms a projection (96, 98) and a snap or detent element (100, 102) that engages behind this projection (96, 98).

9. Vacuum cleaning device according to claim 8, characterized by the fact that the snap or detent element (100, 102) is located on the retaining ring (80) and the projection (96, 98) that interacts with the snap or detent element (100, 102) is located on the outside of the ring wall (66).

10. Vacuum cleaning device according to one of claims 5 to 9, characterized by the fact that the ring wall (66) has two opposing wall sections (68, 70) on each of which at least one retaining element is arranged, which cooperates with a retaining element of the retaining ring (80).

11. Vacuum cleaning device according to one of the preceding claims, characterized by the fact that the permanent filter has a filter basket (82) on which a filter element in the form of a planar structure is arranged.

12. Vacuum cleaning device according to claim 11, characterized by the fact that the surface structure is designed as a filter fabric (84).

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