TW201729746A - Suction cleaning device - Google Patents

Abstract

The invention relates to a suction cleaning device (1), in particular to a hand-held vacuum cleaner powered by a battery, comprising: a fan (2), a chamber to be sucked (3) and a flow chamber (3) according to a flow direction. An air filter (4) between the fans (2), and the air filter flows through the direction of the chamber (3) toward the fan (2) during the suction operation, and during the regeneration operation The opposite direction flows. In order to provide a suction cleaning device (1) capable of optimal regeneration of the chamber to be sorbed (3) and the air filter (4), the invention proposes that the chamber to be sorbed (3) corresponds to at least one chamber to be sorbed (3) one of the length regions along the flow-through bypass passage (5) and/or the bypass passage (5) that bridges the air filter (4), wherein the discharge end is disposed away from the fan (2) Zone (6) is in communication with the chamber (3).

Description

Suction cleaning device

The invention relates to a suction cleaning device, in particular to a hand-held vacuum cleaner powered by a battery, comprising: a fan, a chamber to be sucked and an air filter disposed between the chamber to be sucked and the fan in the flow direction, and the air The filter flows in the direction of the fan from the direction of the suction chamber during the suction operation and flows in the opposite direction during the regeneration operation.

A suction cleaning device of the above type is well known to us. The suction cleaning device has an air filter, in particular a so-called permanent filter, which is not replaced when it is filled with the object to be sucked or, as the case may be, before being filled with the object to be sucked, but by air flow The flow direction opposite to the suction operation is removed from the object to be aspirated. To this end, if the own fan of the vacuum cleaner is not used, for example, the chamber to be suctioned is connected to the pressure side of the fan, the external fan is connected.

During the regeneration operation, the object to be absorbed contained in the chamber to be sucked is blown or sucked out of the suction cleaning device through the nozzle in a direction opposite to the suction operation. In the meantime, the object to be sucked may be stuck in the region of the cross-sectional area of the chamber to be sucked, in particular, the joint between the chamber to be sucked and the nozzle of the suction cleaning device, thereby hindering the regeneration operation or even causing regeneration. The operation could not be implemented.

In view of the above, an object of the present invention is to provide a material to be sorbed The best regenerative suction cleaning device for chambers and air filters.

In order to achieve the above object, the present invention provides a suction cleaning device in which a to-be-primed chamber corresponds to at least one bypass passage that overhangs a length region of a chamber to be sucked and/or an air filter. A bypass passage that is bridged, and wherein the discharge end region disposed away from the fan is in communication with the chamber to be sucked.

The bypass passage can introduce a portion of the air flowing to the suction nozzle into an area of the chamber to be sucked, in which the object to be sucked which is likely to be caught can be blown out or sucked in a targeted manner. Since the flow cross section of the bypass passage is reduced compared to the chamber to be sucked, the guided air component in the bypass passage reaches a higher flow rate. Thereby, the air to be sucked in the bypass passage can be used to discharge the object to be sucked into the object to be sucked, in particular, to discharge the region of the cross section. Preferably, the bypass passage extends into the region of the cross-sectional reduction portion, in particular, from at least a portion of the object to be sucked in the region of the cross-sectional reduction portion. With the longitudinal axis of the suction cleaning device, the air component passing through the bypass passage preferably flows radially outwardly from the outside to the stuck object to be sucked, such that the object to be sucked, for example, toward the longitudinal axis of the chamber to be sucked Was removed. The split air component then exits the suction cleaning device via the suction nozzle. If the bypass passage crosses the axial length region of one of the objects to be sucked, the air can enter the bypass passage through the air filter and/or directly enter the bypass passage from the clean air region outside the object to be sucked, the fan For example, it is disposed in the clean air zone. If the bypass passage also bridges the air filter, the air flows into the bypass passage, for example, directly from the clean air zone, for example, through an intermediate wall formed between the clean air zone and the object to be suctioned chamber, or through the accommodating air filter. Filter holder for the device.

The invention particularly proposes that the discharge end region is provided in the region of the cross-sectional reduction portion of the chamber to be sucked, in particular, the interface between the chamber to be sucked and the suction nozzle of the suction cleaning device. The air guided in the bypass passage can exit the bypass via the discharge end zone aisle. The discharge end zone is in communication with the region of the cross-sectional reduction portion of the chamber to be sucked, advantageously in communication with the area where the object to be sucked is normally caught. The discharge end zone advantageously corresponds to the plane having the smallest cross section such that the air component guided in the bypass passage is applied to the plane where the accumulation of the object to be absorbed is greatest. Among them, the discharge end region is preferably in the shape of a nozzle, whereby the flow rate of the air component passing through the bypass passage is further increased, so that a larger force can be applied to the object to be sucked. This can improve the regeneration effect.

The invention further provides that the discharge end zone can be moved by the application of air by the bypass passage. Thereby, the air flow through the bypass passage can be utilized to loosen the object to be sucked in the region of the discharge end region of the bypass passage. This loosening is achieved not only by the flow itself, but also by the movement of the bypass passage. To this end, the discharge end region of the bypass passage can be, for example, of a flexible design, that is, the discharge end region expands when air is applied, for example, bulging. In addition, the discharge end region may also have movable elements such as movable plates that are driven by the flow of air through the bypass passage to impart a mechanical action to the object to be sucked in the chamber to be sucked.

The invention further provides that the bypass passage is defined on one side by the outer wall and on the other side by a partition wall separate from the outer wall. A partition wall separate from the outer wall may be disposed along the entire circumference of the chamber to be sucked, so that the bypass passage completely surrounds the chamber to be sucked in the circumferential direction. Thereby, the bypass passage is annular in such a way that the longitudinal axis of the suction cleaning device or the chamber to be sucked appears in a point shape. Thereby, the air can be uniformly flowed in the radial direction to the object to be sucked, in particular, the region of the reduced cross section. This simplifies the discharge of the material to be sucked in this area. Alternatively, the chamber to be suctioned may have more than one bypass passage. For example, a plurality of bypass passages may be provided along the circumference of the chamber to be sucked. Among them, the bypass channels are advantageously arranged symmetrically.

In addition, a bypass passage may also be formed in the chamber to be sucked. In this situation The bypass passage is, for example, constructed as a hose conduit that passes through the chamber to be vented, for example from the clean air zone of the suction cleaning device to the cross-sectional reduction of the chamber to be sucked.

The invention further provides that the partition wall is connected to the air filter, the filter holder that houses the air filter, and/or the intermediate wall formed between the clean air zone and the object to be sucked, in particular, forming On the above components. The intermediate wall may be provided on or integral with the outer wall of the bypass passage. If the partition wall is formed on the air filter or the filter holder that houses the air filter, the air filter and the filter holder can be taken out, and the partition wall can be taken out from the suction cleaning device. . This makes it possible to achieve optimum accessibility of the dividing wall, for example to clean or replace the dividing wall. The dividing wall may be integrally formed with the air filter and/or the filter holder, or may be fixed to the air filter or the filter holder as a separate component. If the partition wall is formed on the intermediate wall, the partition wall remains, for example, in a fixed position inside the suction cleaning device, thereby preventing undesired misalignment of the bypass passage, for example, when the filter is replaced or a similar operation is performed. The partition wall is advantageously made of plastic, so that the partition wall can be produced at low cost, for example, by injection molding. In addition, it is possible to simplify the integral molding of the air filter, the filter holder or the intermediate wall of the chamber to be sucked, which is also made of plastic in general.

Furthermore, the dividing wall can be formed independently of the air filter, the filter holder and/or the intermediate wall. In this case, the dividing wall is a separate element which can be removed from the suction cleaning device independently of the air filter and the filter holder and, for example, cleaned or replaced. Thereby, modularization can also be achieved, that is, a different number of partition walls can be provided to form a plurality of bypass passages. For example, the volume of the bypass passage can also be arbitrarily changed by changing the distance between the partition wall and the outer wall.

The invention proposes that the bypass passage has a flow passage leading to the partition of the chamber to be sucked with the air filter, in particular an opening in the partition wall separating the bypass passage from the chamber to be sucked. Through the flow passage, air can flow into the bypass passage from the air filter and/or the air filter partition of the chamber to be sucked. Therefore, the air flowing to the nozzle during the regeneration operation first passes through the air filter, then passes through one of the chambers to be sucked, and then passes through the bypass passage. In particular, the flow passage can be an opening in the dividing wall of the bypass passage. Therefore, when the interface between the chamber to be sucked and the nozzle is blocked by the object to be sucked during the regeneration operation, an air component can enter the bypass passage through the opening, and exit the bypass passage through the discharge end region in the blocked region. In order to flow specifically to the blockage and eliminate the blockage there.

Particularly advantageously, the flow section has a grid and/or a mesh. The grid or mesh may be constructed of plastic, metal or composite materials. The grid or mesh prevents the coarse particles contained in the chamber to enter the bypass passage from being blocked by the bypass passage. The grid or mesh should preferably have a grid width of less than 5 mm. In addition, the grid width should also be not less than 0.3 mm, otherwise the flow resistance of the grid or mesh will be excessively increased, and the air flow through the bypass passage can no longer achieve the effects of the present invention.

The invention further provides an air filter, a filter holder for accommodating the air filter, and/or an intermediate wall disposed between the clean air region and the chamber to be squirted, having a bypass passage and/or a chamber to be absorbing An air inlet that is connected to the clean air area outside the object to be sucked. According to this embodiment, air can flow directly into the bypass passage from the clean air zone located outside the object to be sucked. In the meantime, the air does not pass through the filter material of the air filter. The air inlet may be formed in an air filter, a filter holder or an intermediate wall provided between the clean air zone and the object to be sucked. For example, the air inlet may be formed on the filter holder along the periphery of the air filter to generate an annular air inlet, and the ring The air inlet is particularly advantageous in that it corresponds to a likewise annular bypass channel. Thus, an air component can flow directly into the bypass passage from the clean air zone through the air inlet. In addition, another air component can flow from the clean air zone through the air inlet to the chamber to be cleaned, for example, to remove the object to be sucked onto the air filter. In this case, starting from the clean air zone, the first air component flows into the bypass passage and the second air component flows into the chamber to be sucked.

The invention proposes here that the air inlet has a filter material. Thereby, during the suction operation of the suction cleaning device, the object to be sucked enters the clean air region from the object to be sucked and the fan is damaged therein. The filter material of the air inlet can be the same as the filter material of the air filter. The air inlet between the bypass passage and the clean air zone may be a grill or mesh that intercepts only coarse particles because, in combination with an auxiliary means (for example, a check valve), the object to be sucked is prevented from passing through the bypass. aisle.

The invention finally proposes a bypass passage, in particular a discharge end zone, and/or an air inlet connecting the bypass passage to the clean air zone located outside the object to be sucked, having a check valve. Thereby, the bypass passage adopts a design which can achieve the following effects, that is, during the suction operation of the suction cleaning device, the object to be sucked cannot pass through the bypass passage into the clean air region. Therefore, the discharge end zone and the air inlet can be configured with a check valve that allows only air to enter the bypass passage in one direction. The check valve can be provided, for example, as a flexible sealing lip in the region of the discharge end region, or as a check valve provided on the air inlet which is closed during the suction operation and opened during the regeneration operation.

Alternatively or additionally, air may pass over the discharge end region of the bypass passage during the pumping operation by implementing a region in which the discharge end region is disposed in the chamber to be suctioned to be smaller than the remaining region.

The invention is explained in detail below in conjunction with the examples.

1‧‧‧Sucking cleaning device

2‧‧‧fan

3‧‧‧Sucking room

4‧‧‧Air filter

5‧‧‧bypass channel

6‧‧‧Drainage area

7‧‧‧ cross section reduction

8‧‧‧ nozzle

9‧‧‧ outer wall

10‧‧‧ partition wall

11‧‧‧Filter holder

12‧‧‧Trainage Department

13‧‧‧Clean air zone

14‧‧‧Air inlet

15‧‧‧Filter materials

16‧‧‧ check valve

17‧‧‧ vertical axis

18‧‧‧ switch

19‧‧‧Hands

20‧‧‧Sucking objects

21‧‧‧ middle wall

Figure 1 is a schematic view of the suction cleaning device of the present invention.

Fig. 2 is a longitudinal sectional view of the suction chamber of the first embodiment of the suction cleaning device during the regeneration operation.

Fig. 3 is a longitudinal sectional view showing a chamber to be sucked in the second embodiment.

Fig. 4 is a longitudinal sectional view of a chamber to be sucked in a third embodiment.

Fig. 5 is an exploded view of the object to be sucked chamber and the air filter of the first embodiment.

Figure 6 is an exploded view of the object to be suction chamber and the air filter of the second embodiment.

Fig. 7 is an exploded view of the object to be sucked chamber and the air filter of the third embodiment.

Figure 8 is an exploded view of the chamber to be sucked and the air filter of the fourth embodiment.

Figure 1 shows a suction cleaning device 1, here constructed as a hand-held vacuum cleaner powered by a battery. The suction cleaning device 1 has a housing with a suction nozzle 8 for guiding the suction cleaning device 1 on the surface to be cleaned, and having a handle 19 facing away from the suction nozzle 8, the handle being tied It is used for the user to operate the suction cleaning device 1. The handle 19 is provided with a switch 18 which is constructed here as an on/off switch. Further, the suction type cleaning device 1 has a chamber 3 to be sucked and a fan 2, and an air filter 4 is provided in the chamber to be sucked. The air filter 4 is here constructed as a three-dimensional conical filter cartridge that projects into the chamber 3 to be sucked.

During the suction operation of the suction cleaning device 1, the object to be sucked 20 sucked from the surface to be cleaned passes through the suction nozzle 8 and enters the object to be suction chamber 3 of the suction cleaning device 1 where it is subjected to the air filter. The interception is such that only the air from which the object to be sucked 20 is removed can flow to the fan 2. The object to be sucked 20 is collected in the chamber 3 to be sucked, and in particular also deposited on the air filter 4. The suction operation can be continued until the air filter 4 or the object to be sucked chamber 3 is filled. In order to make the object to be sucked including the air filter 4 The chamber 3 is regenerated or emptied, and during the regenerative operation of the suction cleaning device 1, the air flow directed in the opposite direction to the normal flow during the suction operation is directed through the air filter 4 and the chamber 3 to be sucked. The suction object 20 contained in the chamber to be sucked is discharged through the suction nozzle 8 to the suction cleaning device 1. In order to achieve the above-described regeneration operation, the suction chamber 3 can be connected to the external fan through the suction nozzle 8, in particular, the fan for the base of the suction cleaning device 1. Alternatively, the own fan 2 of the suction cleaning device 1 can be operated in such a manner that the fan blows air through the air filter 4 into the chamber 3 to be sucked. For this purpose, the fan 2 can be operated in the opposite direction of rotation as appropriate, or the blown air of the fan 2 can be introduced into the chamber 3 by means of a corresponding flow deflection means.

Whether the suction chamber 3 or the air filter 4 is blown or emptied during the cleaning operation has no effect on the following embodiments of the present invention.

2 shows a section of the suction cleaning device 1 having a chamber 3 to be sucked, at least a portion of the nozzle 8 together with a clean air zone 13 provided with a fan 2. The suction nozzle 8, the suction chamber 3 and the clean air zone 13 are arranged one after the other along the longitudinal axis 17 of the suction cleaning device 1. The suction cleaning device 1 has an outer wall 9 formed along the longitudinal axis 17 in the circumferential direction of the suction cleaning device 1. Furthermore, the suction cleaning device 1 has an intermediate wall 21 separating the chamber 3 to be cleaned from the clean air region 13. The air filter 4 constructed as a cone filter cartridge is provided on the intermediate wall 21 separating the chamber 3 to be cleaned from the clean air region 13 by the filter holder 11. The air filter 4 projects into the chamber 3 to be sucked, and air is passed through the air filter during the suction operation and the regeneration operation of the suction cleaning device 1. A filter material 15 is provided on the circumferential surface of the air filter 4, here for example a filter web.

Separated at a distance from the outer wall 9 of the suction cleaning device 1 The wall 10 is viewed as a longitudinal axis 17 which is formed on an axial length region of the chamber 3 to be sucked. The partition wall 10 is fixed to the intermediate wall 21, that is, integrally formed with the intermediate wall, and surrounds the air filter 4 in the circumferential direction. Specifically, the partition wall 10 has a cylindrical shape and is disposed coaxially with the air filter 4 and the outer wall 9 as viewed on the longitudinal axis 17. The partition wall 10 is arranged at a clear distance from the outer wall 9, for example 10 mm. Therein, a bypass passage 5 which is also cylindrical is formed between the outer wall 9 and the partition wall 10. This bypass passage 5 extends from the filter holder 11 to the engagement zone between the chamber 3 to be sucked and the suction nozzle 8, i.e. the region of the chamber 3 to be with the cross-sectional reduction 7 . The end region of the bypass passage 5 corresponding to the cross-sectional reduction portion 7 is constructed as the discharge end region 6. On the side opposite the discharge end zone 6, the partition wall 10 has a flow passage 12 through which an air component flows into the bypass passage 5. The flow passage 12 here has a grid which prevents the substance to be sucked 20 contained in the chamber 3 to enter the bypass passage 5. The grid width of the grid is here, for example, less than 3 mm.

When the regeneration operation is carried out, the flow direction of the fan 2 is reversed with respect to the flow direction during the suction operation, so that the air flows into the air filter 4 from the clean air zone 13, penetrates the filter material 15 and enters the object to be suction chamber 3. In the meantime, the object to be adsorbed 20 accumulated on the filter material 15 falls off and is further transported into the chamber 3 to be sucked. The object to be sucked 20 flows toward the suction nozzle 8 to the cross-sectional reduction portion 7 between the object to be suction chamber 3 and the suction nozzle 8. Among them, the type and size of the object to be sucked 20 may cause the object to be sucked 20 to be caught in the region of the cross-sectional narrowing portion 7. The pressure inside the chamber 3 is thus increased, whereby at least one component of the air can pass through the flow passage 12 of the partition wall 10 to enter the bypass passage 5. The object to be adsorbed 20 contained in the chamber 3 to be sucked is filtered by the grid of the flow passage portion 12 so that at most fine particulate matter can enter the bypass passage 5. The air flows inside the bypass passage 5 toward the discharge end region 6 formed in the region of the cross-sectional reduction portion 7. In this way, the bypass passage 5 will axially move the chamber 3 The length region is overlapped with a portion of the object to be sucked 20 in the region of the cross-sectional reduction portion 7 to be overbridged. Viewed from the longitudinal axis 17, the air flows substantially radially from the radial direction to the object to be sucked 20, so that the object to be sucked is blown on the one hand to the longitudinal axis 17 and on the other hand is blown into the suction nozzle 8. The object to be sucked 20 located in front of the discharge end region 6 becomes loose and is no longer jammed, so that the object to be sucked 20 can pass through the cross-sectional reduction portion 7.

Figure 3 shows a second embodiment of the invention in which the filter holder 11 disposed between the clean air zone 13 and the chamber 3 to be sucked has an air inlet 14 through which air can be placed in the air filter 4 In the case of bridging, the self-cleaning air zone 13 flows directly into the chamber 3 and the bypass passage 5. The air inlet 14 has a filter material 15, like the filter material 15 of the air filter 4, which is likewise a filter web. The partition wall 10 is provided on the filter holder 11, and thus, when the filter holder 11 is taken out, the partition wall is also taken out from the suction cleaning device 1. This embodiment of the invention is substantially identical to the embodiment shown in Fig. 2, in which, in addition to the air component flowing into the chamber 3 through the air filter 4, another air component passes directly through the air inlets on both sides of the partition wall 10. 14 enters the chamber 3 and the bypass passage 5. By entering the air component of the object to be suctioned chamber 3 between the air filter 4 and the partition wall 10, the object to be adsorbed 20 deposited on the air filter 4 and the partition wall 10 can be removed to prevent it from being caught. This air component bridges the air filter 4. Further, the air component directly flowing into the bypass passage 5 is bridged from the air inlet port 14 of the object suction chamber 3 to the axial length region of the cross-sectional reduction portion 7 between the object to be suction chamber 3 and the suction nozzle 8. Here, the air component flowing through the bypass passage 5 leaves the bypass passage 5 via the discharge end region 6 formed in the region of the cross-sectional reduction portion 7, and flows laterally toward the object to be sucked 20 which is likely to be stuck there.

FIG. 4 shows an embodiment in which the intermediate wall 21 formed between the clean air zone 13 and the object to be sucked chamber 3 has an air inlet 14. In this case, the wind The mouth 14 is not provided with a filter material 15 and is in a clear state without filter elements, so that the air component flowing into the bypass channel 5 does not have to overcome the flow resistance here. In order to prevent the object 20 from reaching the fan 2 via the suction nozzle 8 and the bypass passage 5 during the suction operation, the discharge end region 6 of the bypass passage 5 has a check valve 16 which is constructed as a flexible seal. The lip, which is only opened during the regeneration operation, closes the bypass passage 5 on the discharge end zone 6 during the suction operation. On the one hand, the check valve 16 is mounted on the partition wall 10 in a deflectable manner and on the other hand on the outer wall 9 . As with the partition wall 10, the check valve 16 can also be cylindrical and, as viewed on the longitudinal axis 17, can be disposed coaxially with the air filter 4 and the outer wall 9. Furthermore, the air inlet 14 can also have a check valve 16 (not shown in Fig. 4) which opens in the same flow direction as the check valve 16 of the discharge end region 6, i.e., in the suction operation It is turned off during the period and turned on during the regeneration operation. A check valve 16 in the form of a deflectable sealing lip provided in the discharge end region 6 is capable of additionally sweeping the region of the cross-sectional reduction portion 7, i.e., in front of the check valve 16, during the yaw movement during the regeneration operation. The object 20 is to be sucked, thereby additionally facilitating the discharge of the object to be sucked 20 into the suction nozzle 8.

5 to 8 show different exploded views of the overall embodiment of the suction chamber 3, the outer wall 9, the intermediate wall 21, the partition wall 10, the filter holder 11 and the air filter 4.

The embodiment shown in Figure 5 has a filter holder 11 comprising an integrated dividing wall 10. The partition wall 10 is integrally formed with the filter holder 11, for example, as a single plastic injection molded part. The air filter 4 is also fixedly connected to the filter holder 11, however, according to an alternative embodiment, the air filter can also be removed from the filter holder 11, i.e., the air filter 4 can be replaced separately . The partition wall 10 has a flow-through portion 12 having a grid for filtering the coarse-grained objects 20. Since, while the air filter 4 and the filter holder 11 are taken out, The partition wall 10 can also be taken out from the suction chamber 3, so that the user of the suction cleaning device 1 can also easily clean the partition wall 10 without having to reach into the suction cleaning device 1 to be sucked. Room 3.

As previously mentioned, the dividing wall 10 can be constructed as a cylindrical element, viewed as a longitudinal axis 17, which is arranged coaxially with the air filter 4 and the outer wall 9. Wherein, the flow passage portion 12 can also be cylindrical, that is, it is formed on the partition wall 10 by 360 degrees in the circumferential direction, or can be constructed as a plurality of single windows covering only a certain range of angles, and the windows can further along The direction of the longitudinal axis 17 is relatively offset.

Fig. 6 shows an embodiment in which the filter holder 11 and the partition wall 10 are constructed as the same element. The air filter 4 is here designed to be removable from the filter holder 11 . The filter holder 11 starts from the longitudinal axis 17 and has an air inlet 14 on the side of the partition wall 10 facing away from the longitudinal axis 17, through which the air can flow directly, ie without having to pass through the air filter 4, into the side. Road channel 5. According to this embodiment, the air inlet 14 does not have a filter grill or the like so that air can flow into the bypass passage 5 with low resistance. In order to prevent the object 20 from flowing into the bypass passage 5 during the suction operation of the suction cleaning device 1, a check valve 16 in the form of a flexible sealing lip is provided on the discharge end region 6 of the partition wall 10.

FIG. 7 shows an embodiment in which the partition wall 10 is fixedly formed in the chamber 3 to be sucked. For this purpose, the partition wall 10 is fixedly connected to the outer wall 9 of the suction cleaning device 1. A check valve 16 is likewise provided on the discharge end region 6 of the bypass passage 5 formed between the partition wall 10 and the outer wall 9. The air inlet 14 disposed opposite the discharge end region 6 is opened and covered by a corresponding partition of the air filter 4, and the partition provides a corresponding air inlet 14 provided with the filter material 15. Here, no separate filter holder 11 is provided between the air filter 4 and the outer wall 9. Specifically, the air The filter 4 is placed directly on the outer wall 9 and the partition wall 10 with its edge region having the air inlet 14. The air inlet 14 of the air filter 4 covers both the bypass passage 5 and a partition of the chamber 3 to be sucked. Thereby, during the cleaning operation of the suction cleaning device 1, the air can flow directly into the bypass passage 5 from the clean air zone 13, or directly into the object to be suctioned chamber 3 from the clean air zone 13. By the additional axial air flow formed on the side of the partition wall 10 facing away from the bypass passage 5, the phenomenon that the object to be sucked 20 is caught can be further prevented or eliminated.

Finally, FIG. 8 shows an embodiment in which the air filter 4 is likewise not placed through the filter holder 11 and placed directly on the outer wall 9. The bypass passage 5 has a check valve 16 on the discharge end zone 6 and the air inlet 14, which is constructed as a deflectable valve element. Both check valves 16 are designed to close when the suction cleaning device 1 performs the suction operation and open during the regeneration operation.

Only a single embodiment is shown in the drawings, however, it can be understood that the connection means between the air filter 4, the filter holder 11 and the object to be sucked chamber 3 can also be combined in various ways, and various kinds of The inflow means of the bypass passage 5, for example, passes through the flow passage 12 or the air inlet 14. Of course, the type of check valve 16 and the use of the filter material 15 in the flow passage 12 and the air inlet 14 may vary.

2‧‧‧fan

3‧‧‧Sucking room

4‧‧‧Air filter

5‧‧‧bypass channel

6‧‧‧Drainage area

7‧‧‧ cross section reduction

8‧‧‧ nozzle

9‧‧‧ outer wall

10‧‧‧ partition wall

11‧‧‧Filter holder

12‧‧‧Trainage Department

13‧‧‧Clean air zone

15‧‧‧Filter materials

17‧‧‧ vertical axis

20‧‧‧Sucking objects

21‧‧‧ middle wall

Claims (10)

A suction cleaning device, in particular, a battery-powered handheld vacuum cleaner having a fan (2), a to-be-primed chamber (3), and a flow direction disposed between the object to be suction chamber (3) and the fan (2) Air filter (4) which flows in the direction of the fan (2) from the direction of the chamber (3) during the suction operation and flows in the opposite direction during the regeneration operation , characterized in that the to-be-absorbed chamber (3) corresponds to at least one bypass passage (5) that crosses a length region of the chamber to be sucked (3) along the flow direction and/or the air filter (4) A bypass bypass passage (5), wherein a discharge end zone (6) disposed away from the fan (2) is in communication with the suction chamber (3). The suction cleaning device of claim 1, wherein the discharge end region (6) is disposed in a region of the cross-sectional reduction portion (7) of the object to be suction chamber (3), in particular, is provided in the suction type The interface between the chamber to be sucked (3) and the nozzle (8) of the cleaning device (1). A suction cleaning device according to claim 1 or 2, wherein the discharge end zone (6) is movable by the application of air by the bypass passage (5). A suction cleaning device according to any of the preceding claims, wherein the bypass passage (5) is defined on one side by an outer wall (9) and on the other side by a separate part from the outer wall (9) Defined by the partition (10). The suction cleaning device of claim 4, wherein the partition wall (10) is associated with the air filter (4), the filter holder (11) for accommodating the air filter (4), and/or Or it is connected to the intermediate wall (21) formed between the clean air zone (13) and the object to be sucked (3), in particular, on the above-mentioned element. The suction cleaning device of claim 4 or 5, wherein the partition wall (10) is independent of the air filter (4), the filter holder (11) and/or the intermediate wall (21) shape to make. A suction cleaning device according to any of the preceding claims, wherein the bypass passage (5) has a flow passage leading to the zone of the object to be sucked (3) having the air filter (4) ( 12), in particular, an opening in the partition wall (10) separating the bypass passage (5) from the object to be suction chamber (3). The suction cleaning device of claim 7, wherein the flow passage (12) has a grill and/or a mesh. A suction cleaning device according to any of the preceding claims, wherein the air filter (4), the filter holder (11) housing the air filter (4), and/or being disposed in clean air An intermediate wall (21) between the zone (13) and the chamber (3) having the bypass passage (5) and/or the chamber (3) and the chamber (3) outside the chamber The air inlet (14) connected to the clean air zone (13). A suction cleaning device according to any of the preceding claims, wherein the bypass passage (5), in particular the discharge end region (6), and/or the bypass passage (5) are located The air inlet (14) connected to the clean air zone (13) outside the suction chamber (3) has a check valve (16).