EP2237711A1

EP2237711A1 - Portable hard surface vacuum

Info

Publication number: EP2237711A1
Application number: EP08869952A
Authority: EP
Inventors: Michael Scharmacher; Ralph Diehl; Michael Schütz; Günter RAUSCHER; Martin Schmidgall
Original assignee: Alfred Kaercher SE and Co KG
Current assignee: Alfred Kaercher SE and Co KG
Priority date: 2008-01-11
Filing date: 2008-12-18
Publication date: 2010-10-13
Anticipated expiration: 2028-12-18
Also published as: PL2237711T3; EP2237711B1; WO2009086891A1; DK2237711T3; CN101909499A; ES2399089T3; CN101909499B; DE102008004965B3

Abstract

The invention relates to a portable hard surface vacuum (10) comprising a suction nozzle (45) and a suction unit (16), which is in fluid connection with the suction nozzle, for vacuuming a liquid-air mixture from a hard surface, and comprising a separating device (40, 57) for separating liquid from the liquid-air mixture and comprising a waste liquid tank (23) for receiving the separated liquid. In order to refine the hard surface vacuum in such a way that a constant suction flow is provided, regardless of the fill level of the waste liquid tank, and such that operation in an arbitrary orientation in relation to the vertical position can be carried out, a separating chamber (33) is arranged between the suction nozzle and the suction unit, said chamber housing the separating unit and being in fluid connection via a suction line (47) to the suction port (48) of the suction nozzle and in fluid connection to the suction unit via a suction line (60), and said chamber being connected via an outlet opening (67) to the waste liquid tank, wherein the port regions (51, 61) of the suction (47) and vacuum line within the separating chamber are surrounded at least partially by intermediate storage regions (71, 72, 73) for separated liquid in the circumferential direction.

Description

Portable hard surface suction device

The invention relates to a portable Hartflächenabsauggerät with a suction nozzle and a suction unit, which is in flow communication with the suction nozzle for sucking a liquid-air mixture from a hard surface, and with a separation device for separating liquid from the liquid-air mixture and with a dirty liquid tank for Aufhof take the separated liquid.

By means of such Hartflächenabsauggeräte a liquid from a hard surface, such as a window, can be sucked. For this purpose, a suction flow is generated by means of a suction unit, so that a mixture of liquid and air can be sucked in via the suction nozzle. The liquid can be separated by means of the separator from the mixture of liquid and air and transferred to a dirty liquid tank. The Hartflächenabsauggeräte are designed to be portable, so that they can be guided in a simple manner by the user manually along the sucked hard surface along.

Such Hartflächenabsauggeräte are known for example from EP 0 663 176 Bl and US 6,691,369 Bl. In the hard surface suction device disclosed in EP 0 663 176 B1, the separation of liquid from the liquid-air mixture takes place directly in the dirty liquid tank. This has the consequence that the degree of separation is dependent on the liquid level in the dirty liquid tank. In addition, depending on the level of the liquid, the suction flow caused by the suction unit changes. With increasing filling of the separation tank there is a risk that the Suction flow is reduced and thereby only a smaller amount of liquid can be sucked from the hard surface.

The Hartflächenabsauggerät, which is disclosed in US 6,691,369 Bl, also has the disadvantage that it can only be operated in a predetermined position relative to the vertical, otherwise the connection between the suction nozzle and the suction unit is interrupted by a float. If the Hartflächenabsauggerät operated over the head such that the suction nozzle is arranged relative to the vertical below the suction unit, so there is a risk that aspirated from the hard surface

Liquid again emerges from the suction mouth of the suction nozzle. The user must therefore make sure that he operates the hard surface suction only in a predetermined position. This complicates the suction of hard surfaces that are difficult to reach by the user, for example, the window panes inclined obliquely to the vertical roof windows.

Object of the present invention is to develop a portable Hartflächenabsauggerät of the type mentioned in such a way that it regardless of the level of the dirty liquid tank forms a constant Saugström mung and can be operated in any orientation relative to the vertical.

This object is achieved in a portable Hartflächenabsauggerät of the generic type according to the invention that in the flow path between the suction nozzle and the suction unit, a deposition chamber is arranged, which receives the separator and the via a suction line with a suction of the suction nozzle and a vacuum line with the suction unit is in flow communication and which is connected via a drain opening with the dirty liquid tank, wherein the mouth areas of the suction and the vacuum line within the separation chamber in the circumferential direction are at least partially surrounded by intermediate storage areas for separated liquid.

In the hard surface suction device according to the invention, the separation of liquid from the aspirated liquid-air mixture takes place in a separation chamber, which is connected to the dirty liquid tank via a drain opening. In the dirty liquid tank, the extracted liquid collects without thereby affecting the suction flow caused by the suction unit. The suction flow thus does not reach through the dirty liquid tank and is thus independent of the level of the dirty liquid tank. The separation chamber is in fluid communication with the suction mouth of the suction nozzle via a suction line, and the separation chamber is connected to the suction unit via a vacuum line. The mouth region of the suction line which opens into the deposition chamber is surrounded within the deposition chamber by at least a portion of its circumference by a buffer region for separated liquid. The same applies to the mouth region of the vacuum line which opens into the separation chamber. Also, this mouth region is surrounded at least partially within the deposition chamber in the circumferential direction by a buffer storage area for separated liquid. Such a configuration has the advantage that the Hartflächenab- suction device according to the invention can be operated in any orientation relative to the vertical. If, for example, the hard-surface suction device is operated in such a way that the suction nozzle is located below the suction device relative to the vertical. a suction flow can nevertheless be formed and liquid can be deposited in the separation chamber by means of the separation device, whereby the separated liquid can first accumulate in the at least one intermediate storage area surrounding the opening region of the suction line within the separation chamber. If the hard surface suction device is operated again at a later time in an orientation in which the suction nozzle is arranged above the suction unit, the liquid accumulated in the above-mentioned intermediate storage area can flow via the discharge opening into the dirty liquid tank. If the hard surface suction device according to the invention is operated horizontally, that is to say in an orientation in which the suction nozzle is arranged approximately at the same height as the suction unit with respect to the vertical, then a suction flow can also be formed in such an orientation, with separated liquid being in the intermediate storage areas , which surround the suction and the vacuum line, can accumulate to get into the dirty liquid tank in subsequent upright position of the Hartflächenabsauggerätes via the drain opening.

The Hartflächenabsauggerät invention is thus characterized by a constant Absaugqualität, regardless of the level of the dirty liquid tank and regardless of the location that occupies the Hartflächenabsauggerät relative to the vertical. It is therefore particularly suitable for aspirating a water film from window panes. It can be performed by the user in the same way along the window, as he is already used to the handling of conventional window cleaning devices, where applied to the window glass liquid by means of a Rubber-removing puller is removed manually from the windowpane.

It is advantageous if the separation device forms a baffle within the separation chamber, which is arranged between the mouth regions of the suction and the vacuum line. From the suction unit, the deposition chamber is subjected to negative pressure during operation of the hard surface suction device, so that the liquid-air mixture sucked in via the suction nozzle is sucked into the separation chamber. The mixture flows through the mouth region of the suction line and then impinges within the deposition chamber on the baffle wall, at which liquid is deposited. The sucked air flows around the baffle wall and can then be sucked out of the separation chamber on the side of the baffle wall facing away from the mouth region of the suction line via the mouth region of the vacuum line.

It is advantageous if the baffle wall is convexly curved in the direction of the mouth region of the suction line. This has the advantage that the sucked air can flow around the baffle with low flow losses in order to reach the mouth region of the vacuum line.

A particularly large separating effect is achieved in an advantageous embodiment in that the baffle wall covers the mouth opening of the vacuum line. The sucked air experiences thereby within the deposition chamber strong changes of direction until it reaches the mouth of the vacuum line. Entrained liquid droplets can be deposited thereby particularly effective within the deposition chamber of the air flow.

A further increase in the separation effect can be achieved by arranging a baffle plate at a distance from the mouth opening of the suction line. In such an embodiment, the aspirated liquid air-air mixture at the mouth opening of the suction line first encounters a baffle plate, in order then to reach the interior of the deposition chamber, in which the separation device is arranged. A portion of the sucked liquid is already deposited on the baffle plate, another part is then separated by means of the separator of the sucked air.

Preferably, the baffle plate is planar and aligned obliquely to the longitudinal axis of the suction line. Flow losses of the suction flow can be kept low and entrained liquid droplets can be reliably deposited.

In a particularly preferred embodiment of the portable hard-surface suction device according to the invention, the mouth region of the suction line dips into a receiving shaft of the separation chamber projecting into the separation chamber, the receiving shaft and the outer walls of the separation chamber forming at least one intermediate storage area for separated liquid. The mouth region of the suction line is received by the receiving shaft and held in this reliable. The risk of mechanical damage to the suction line is thereby reduced. Between the receiving shaft and the outer walls of the deposition chamber at least one intermediate storage area is formed, in which separated liquid can accumulate with appropriate alignment of the hard surface suction device, in particular when the Hard surface suction is operated overhead, that is, when the suction nozzle occupies a position below the suction unit relative to the vertical. If the hard-surface suction device is operated upright again at a later time, so that the suction nozzle is arranged above the suction unit, the liquid accumulated in the at least one intermediate storage area between the receiving shaft and the outer walls of the separation chamber can flow into the dirty liquid tank via the discharge opening.

It is expedient if the at least one buffer storage area which is arranged between the receiving shaft and the outer walls of the separation chamber widens in the direction of the separation device, because this facilitates the outflow of liquid accumulated in the intermediate storage area. In particular, a continuous expansion of the at least one temporary storage area, which is arranged on the outside of the receiving shaft, has proven to be particularly favorable.

The mouth region of the vacuum line is preferably formed by a pipe projecting into the deposition chamber. The pipe section can be completely surrounded within the separation chamber in the circumferential direction by a buffer storage area for separated liquid, that is to say the opening area of the vacuum line is preferably surrounded by an annular intermediate storage area.

The at least one intermediate storage area which at least partially surrounds the mouth region of the vacuum line in the circumferential direction, in an advantageous embodiment, widens in the direction of the deposition insert. direction. This facilitates the drainage of accumulated liquid from the staging area. In particular, a continuous expansion has proven to be advantageous.

The Hartflächenabsauggerät invention can be worn by the user with one hand. It is advantageous if the vacuum line passes through a handle of Hartflächenabsauggerätes. The handle may preferably be completely encompassed by the user. This makes it easier to guide the hard surface suction device along the hard surface to be suctioned off, in particular along a window pane or even a glass door.

To be able to clean the deposition chamber from time to time and also to simplify the assembly of Hartflächenabsauggerätes, it is advantageous if the Hartflächenabsauggerät has a suction unit receiving the basic housing and the deposition chamber with the main body is detachably connected. For example, a snap or locking connection can be used. The deposition chamber can thus be easily separated from the user from the main body, so that the separation chamber can be cleaned. When mounting the Hartflächenabsauggerä- tes, it is only necessary to connect the deposition chamber with the base housing, for example, to lock. Alternatively, for example, a screw connection can be used.

It is particularly advantageous if the dirty liquid tank is made separable so that it can be separated from the user by the remaining hard surface suction device, for example to empty the tank. The dirty liquid tank is preferably connected to the base housing of the hard surface. chenabsauggerätes releasably connectable. It can, for example, a snap or locking connection are used, alternatively, in particular, a screw is possible.

Preferably, the suction nozzle with the deposition chamber is detachably connectable. For example, it can be provided that the suction nozzle can be connected via a snap or latching connection with the deposition chamber. Alternatively, for example, a screw connection may be provided.

It is particularly advantageous if the Hartflächenabsauggerät a the

Suction unit and in particular also rechargeable batteries receiving basic housing, with a designed as a separate component separation chamber is detachably connected, which in turn can be releasably connected to the suction mouth and the suction line comprehensive suction nozzle, wherein additionally one with the base housing and / or with the deposition chamber detachably connectable dirty fluid tank is provided.

At the outlet opening of the separation chamber, a drainage funnel is arranged in a preferred embodiment of the invention for transferring separated liquid from the separation chamber into the dirty liquid tank. Starting from the separation chamber, the drainage funnel narrows in the direction of the dirty fluid tank. This simplifies the drainage of separated liquid into the dirty liquid tank.

In order for liquid to flow into the contaminant tank during operation of the hardfloor aspirator, it is necessary for the air within the contaminant tank to exit the tank can. For this purpose, it is provided in an advantageous embodiment that projects into the deposition chamber a submerged in the dirty liquid tank ventilation duct. The dirty liquid tank can be ventilated via the ventilation channel. Starting from the dirty liquid tank, the ventilation duct projects into the separation chamber, so that liquid deposited in the separation chamber flows around the ventilation duct and can pass unhindered into the dirty liquid tank and at the same time air can escape from the dirty liquid tank via the ventilation duct.

In order to prevent liquid from the dirty liquid tank from escaping back into the deposition chamber, especially when the hard surface suction device is in an overhead position, it is provided in an advantageous embodiment that a drainage channel through which the dirty liquid tank is connected to the separation chamber projects into the dirty liquid tank. If the Hartflächenabsauggerät operated over the head such that the deposition chamber is disposed below the dirty liquid tank with respect to the vertical, the liquid can accumulate within the dirty liquid tank in the area surrounding the drainage channel without the risk that the liquid will escape from the dirty liquid tank ,

The following description of a preferred embodiment of the invention serves in conjunction with the drawings for further explanation. Show it :

Figure 1: a perspective view of a Hartflächenabsauggerätes and

FIG. 2: a sectional view of the hard surface suction device from FIG. 1.

In the drawing, a portable Hartflächenabsauggerät 10 is shown schematically, with which a liquid can be sucked from a hard surface, such as a window glass. The Hartflächenabsauggerät 10 can in this case held by the user with one hand on a handle 12 and guided in the manner of a conventional, a rubber lip having puller on the hard surface along.

The Hartflächenabsauggerät 10 includes a base housing 14, which forms the handle 12 and a suction unit 16 with a suction turbine 17 and an electric motor 18 receives. Within the base housing 14 is at least one rechargeable battery 19, in particular a lithium-ion battery, arranged to supply power to the electric motor 18. On the underside, the base housing 14 forms a base 21 for setting up the Hartflächenabsauggerätes 10 on a footprint.

Disposed next to the base housing 14 is a dirty liquid tank 23 which can be removed from the main housing 14 and into which a filling device 25 projects with a discharge channel 26 and a ventilation channel 27 oriented parallel to the discharge pipe 26. The ventilation channel 27 protrudes from the top side via the drainage pipe 26. On the side facing away from the filling device 25, the dirty liquid tank 23 has on its side facing away from the handle 12 a drain opening 31 which can be sealed tightly by means of a cover 29 for emptying the dirty liquid tank 23. On the upper side closes to the base housing 14 and the dirty liquid tank 23 to a deposition chamber 33, which is detachably connected via a releasable latching connection with the base housing 14. For releasing the latching connection, push-buttons 34 are arranged on the outside of the deposition chamber 33. The deposition chamber 33 has outer walls in the form of a subsequent to the dirty liquid tank 23, concavely curved front wall 36, a subsequent to the handle 12, convex curved rear wall 37 and in the form of the front wall 36 integrally connected to the rear wall 37 side walls, of which in the drawing, namely in Figure 1, only one side wall 38 can be seen.

Within the deposition chamber 33, a separation device in the form of a baffle 40 is arranged, which is arcuately curved. On the upper side, the deposition chamber 33 is delimited by a ceiling wall 42 connecting the front wall 36, the rear wall 37 and the two side walls 38 in one piece, to which a receiving shaft 43 projecting into the deposition chamber 33 is integrally formed.

On the upper side, a suction nozzle 45, which has a suction line 47, adjoins the deposition chamber 33. The suction line 47 extends from a suction mouth 48, which is defined by a first flexible wiper lip 49 and a second flexible wiper lip 50, and dips into the receiving shaft 43 with a mouth region 51. At the mouth opening 52 of the suction line 47 facing away from the suction mouth 48, a holding element 54 is arranged which, at a distance from the mouth opening 52 within the deposition chamber 33, carries a flat baffle plate 57 aligned obliquely to the longitudinal axis 55 of the suction line 47.

Starting from the handle 12, the suction nozzle 45 widens transversely to the longitudinal extent of the handle 12, so that the two wiper lips 49 and 50 extend over a multiple of the width of the base housing 14 and thus can cover a hard surface to be vacuumed, in particular a window pane, over a large area.

The deposition chamber 33 can be acted upon by the suction unit 16 with negative pressure. For this purpose, the suction unit is in fluid communication with the separating chamber 33 via a vacuum line 60 which extends through the handle 12. A mouth region 61 of the vacuum line 60 is designed in the form of a pipe socket 62 and protrudes into the deposition chamber 33 on the side of the impact wall 40 facing away from the mouth region 51 of the suction line 47. The orifice 63 of the vacuum line 60 is covered by the convexly curved in the direction of the inlet conduit 47 baffle 40. Due to the application of negative pressure to the deposition chamber 33, starting from the suction mouth 48 via the suction line 47, the deposition chamber 33 and the vacuum line 60 forms a suction flow. The sucked suction air can escape from the base housing 14 via exhaust air openings 65 formed laterally into the base housing 14.

As already explained, the Hartflächenabsauggerät 10 can be performed in the manner of a puller for cleaning a hard surface, in particular a window or a glass door, along the hard surface for sucking liquid. In this case, a liquid-air mixture enters the deposition chamber 33 via the suction mouth 48 and the suction line 47 and initially strikes the one arranged at a distance from the mouth opening 52 of the suction line 47 Baffle plate 57, at which a part of the entrained liquid separates. Subsequently, the liquid-air mixture impinges on the baffle 40, at which the remaining entrained liquid separates, whereas the sucked air flows around the baffle 40 and is guided via the vacuum line 60 to the suction unit 16. The separated within the deposition chamber 33 liquid can flow through the drain passage 26 into the dirty liquid tank 23. For this purpose, the deposition chamber 33 has a drain opening 67, on which a drain funnel 68 is arranged. The discharge funnel 68 tapers in the direction of the dirty liquid tank 23. Below the discharge funnel 68, the filling device 25 with the discharge channel 26 is arranged. The ventilation channel 27 passes through the discharge funnel 68 and projects into the deposition chamber 33.

In Figures 1 and 2, the Hartflächenabsauggerät 10 is shown in an upright position, in which the suction nozzle 45 occupies a position above the suction unit 16 relative to the vertical. If the Hartflächenabsauggerät 10 is guided in this position along a surface to be sucked, so can within the separation chamber 33 separated liquid readily to the drain opening 67 and over this into the dirty liquid tank 23 gen. Gen, however, the Hartflächenabsauggerät 10 operated in a lying position, in the the suction nozzle 45 relative to the vertical substantially at the same height as the suction unit 16 is arranged, or the Hartflächenabsauggerät 10 is operated overhead so that the suction nozzle 45 is disposed relative to the vertical below the suction unit 16, so may within the deposition chamber 33 deposited liquid initially accumulate in intermediate storage areas of the deposition chamber 33 until the Hartflächenabsauggerät 10 again in the in FIGS. 1 and 2 dar- operated upright position. A first intermediate storage area 71 is arranged between the front wall 36 of the deposition chamber 33 and the receiving shaft 43, and a second intermediate storage area 72 is positioned between the rear wall 37 of the deposition chamber 33 and the receiving shaft 43. Both intermediate storage areas 71, 72 extend continuously in the direction of the baffle 40. The two intermediate storage areas 71 and 72 extend in the peripheral direction over a portion of the mouth region 51 of the suction line 47.

A third intermediate storage region 73 extends annularly over the entire circumference of the mouth region 61 of the vacuum line 60 within the deposition chamber 33. The third intermediate storage region 73 also widens continuously in the direction of the impact wall 40.

The first and second intermediate storage areas 71 and 72 receive liquid deposited in the deposition chamber 33, especially when the hard surface suction device 10 is in the upside-down position, and the third intermediate storage area 73 absorbs liquid deposited in the deposition chamber 33, in particular when the hard surface suction device 10 is lying, without the risk exists that separated liquid can pass to the suction mouth 48 via the suction line 47 or to the suction unit 16 via the vacuum line 60. If the hard surface suction device 10 is then operated again in an upright position, the liquid accumulated in the meantime flows out of the intermediate storage areas 71, 72 and 73 and reaches the dirty liquid tank 23 via the drain opening 67 and the drain pipe 26. Since the drainage channel 26 projects into the dirty liquid tank 23, its end 75 immersed into the dirty liquid tank 23 being approximately halfway up the dirty liquid tank 23 relative to the upright position shown in FIGS. 1 and 2, is a horizontal or overhead standing operation of the Hartflächenabsauggerätes 10 also no risk that already reached in the dirty liquid tank 23 liquid can flow out of the dirty liquid tank 23 again. The liquid contained within the dirty liquid tank 23 collects in the lying or upside down operation of the Hartflächenabsaug- device 10 in the surrounding the drain channel 26 region of the dirty liquid tank 23rd

The dirty liquid tank 23 can be ventilated in any position of the hard surface suction device 10 via the ventilation channel 27 extending parallel to the drainage pipe 26, so that air can escape from the dirty liquid tank 23 at any time, which can then be sucked out of the separation chamber 33 via the vacuum line 60.

The Hartflächenabsauggerät 10 can thus be operated in any position with respect to the vertical, wherein in the deposition chamber 33 separated liquid can either enter directly into the dirty liquid tank 23 or it is first stored in intermediate storage areas 71, 72 or 73 of the deposition chamber 33, to the Hartflächenabsauggerät 10 again assumes an upright position. The intermediate storage areas 71, 72 and 73 may each have a volume of more than 10 ml, for example a volume of about 20 ml.

Claims

A portable Hartflächenabsauggerät with a suction nozzle and a suction unit which is in flow communication with the suction nozzle for sucking a liquid-air mixture from a hard surface, and with a separator for separating liquid from the liquid-air mixture and with a dirty liquid tank for receiving the separated liquid , characterized in that in the flow path between the suction nozzle (45) and the suction unit (16) a deposition chamber (33) is arranged, which receives the separation device (40, 57) and which via a suction line (47) with a suction mouth (48). the suction nozzle (45) and via a vacuum line (60) with the suction unit (16) is in flow communication and which is connected via a drain opening (67) with the dirty liquid tank (23), wherein the mouth regions (51, 61) of the suction and the vacuum line (47, 69) within the deposition chamber (33) in the circumferential direction at least partially e are surrounded by intermediate storage areas (71, 72, 73) for separated liquid.

2. Hartflächenabsauggerät according to claim 1, characterized in that the deposition device within the deposition chamber (33) forms a baffle (40) which is disposed between the mouth regions (51, 61) of the suction and the vacuum line (47, 60).

3. Hartflächenabsauggerät according to claim 2, characterized in that the baffle wall (40) in the direction of the mouth region (51) of the suction line (47) is convexly curved.

4. Hartflächenabsauggerät according to claim 2 or 3, characterized in that the baffle wall (40) covers the mouth opening (63) of the vacuum line (60).

5. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that at a distance from the mouth opening (52) of the suction line (47) a baffle plate (57) is arranged.

6. Hartflächenabsauggerät according to claim 5, characterized in that the baffle plate (57) is planar and aligned obliquely to the longitudinal axis (55) of the suction line (47).

7. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that the mouth region (51) of the suction line (47) in a in the deposition chamber (33) projecting receiving shaft (43) is immersed, wherein the receiving shaft (43) and at least one outer wall (36, 37) of the deposition chamber (33) define at least one intermediate storage area (71, 72).

8. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that the mouth region (61) of the vacuum line (60) of a in the deposition chamber (33) projecting pipe section (62) is formed.

9. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that the mouth region (61) of the vacuum line (60) within the deposition chamber (33) in the circumferential direction of an annular intermediate storage area (73) is surrounded.

10. Hartflächenabsauggerät according to claim 7 or 9, characterized in that extends at least one intermediate storage area (71, 72, 73) in the direction of the separation device (40).

11. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that the vacuum line (60) passes through a handle (12) of the Hartflächenabsauggerätes (10).

12. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that the Hartflächenabsauggerät (10) has a suction unit (16) receiving the base housing (14) and that the deposition chamber (33) to the base housing (14) is releasably connectable. ,

13. Hartflächenabsauggerät according to claim 12, characterized in that the dirty liquid tank (23) to the base housing (14) is releasably connectable.

14. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that the suction nozzle (45) with the deposition chamber (33) is releasably connectable.

15. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that at the drain opening (67) has a discharge funnel (68) is arranged for transferring separated liquid from the separation chamber (33) in the dirty liquid tank (23).

16. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that in the deposition chamber (33) in the dirty liquid tank (23) immersed ventilation duct (27) protrudes.

17. Hartflächenabsauggerät according to any one of the preceding claims, characterized in that in the dirty liquid tank (23) protrudes a drain channel (26) through which the dirty liquid tank (23) with the deposition chamber (33) is connected.