EP3721776B1 - Wet suction device and arrangement of components in such a wet suction device - Google Patents

Description

The present invention relates to a portable wet vacuum cleaner, wherein the wet vacuum cleaner comprises a container for collecting a liquid-dirt mixture. The wet vacuum cleaner is particularly characterized by an inclined sealing plane as the upper end of a collecting container of the wet vacuum cleaner, wherein the inclined sealing plane comprises a filter unit.

The dust that is created on a construction site is often harmful to health and should not be inhaled by people. A distinction is usually made between primary and secondary dust. Primary dust is created during various applications, such as drilling, chiseling or grinding surfaces. This dust spreads in the air and can easily be inhaled by people nearby. The dust can also collect on the floor or other surfaces and thus becomes secondary dust. With regard to this secondary dust, there is a risk that the dust will be stirred up again during further work steps and thus enter the respiratory tract of workers or passers-by.

To avoid primary dust, a dust extractor is usually used, which uses suitable systems or attachments to collect and/or extract the dust directly at the point of origin. This prevents the dust from entering the ambient air and being inhaled by workers or passers-by. A dust extractor or vacuum cleaner is also often used to extract secondary dust in order to specifically suck up and dispose of the dust from the floor.

On construction sites, water or other liquids are also used to prevent primary dust, for example to bind the dust. The targeted addition of water or liquid binds the dust that is created and thus prevents the dust from entering the ambient air. This procedure is used, for example, in cutting processes. Binding dust with the help of liquids such as water, however, leads to a liquid-dirt mixture that also has to be disposed of or vacuumed up. The liquid-dirt mixture or liquid-dust mixture is preferably also referred to as "sludge" in the sense of the invention. In order to suck up the sludge, so-called wet vacuum cleaners are known in the prior art, which are designed to absorb liquid substances and sludge in order to dispose of them in a targeted manner. Many wet vacuum cleaner systems have To do this, set up a collecting container in which the sludge or the collected liquid-dirt mixture can be kept or temporarily stored before the collecting container or the wet vacuum cleaner is emptied and its contents disposed of.

Conventional wet vacuum cleaner systems known from the state of the art are usually based on the wet vacuum cleaners having a single defined position when they are operated. For example, mobile wet vacuum cleaners on wheels can be moved across the floor, always standing upright and, in particular, not tipping over. During operation, an imaginary central axis running through the middle of the wet vacuum cleaner is usually essentially perpendicular to the subsurface or the floor to be cleaned, over which the wet vacuum cleaner can be moved. This defined operating position of the wet vacuum cleaner in the room can ensure that individual components of the wet vacuum cleaner do not come into contact with the mud or the liquid-dirt mixture. In particular, it should be avoided that the filter, the motor, the filter cleaning unit or the vacuum cleaner turbine become soaked with liquid. Such wetting of the components mentioned can lead to damage and a malfunction of the wet vacuum cleaner or its individual components.

When it comes to the use of wet vacuum cleaners, users are increasingly demanding mobile working. What is particularly desired is working as wirelessly as possible, for example using mobile energy sources such as accumulators (batteries) that act as energy sources for the mobile wet vacuum cleaners. In order to further increase mobility when using wet vacuum cleaners, dust extraction systems are known in the state of the art that can be carried on the back using carrying straps. These systems can usually only be used "dry" because it cannot be guaranteed that the vacuum cleaner is in an upright position and that the filter, filter cleaning unit, motor and/or turbine are dry. In the sense of the invention, use "only dry" means that the corresponding vacuum cleaner is designed as a pure dry vacuum cleaner and is not designed to suck up mud or liquids. The vulnerable components of a fictitious portable wet vacuum cleaner could come into contact with mud and liquid in particular if the user leans forward with such a vacuum cleaner on his back, for example to pick up an object from the floor. This tilting would move the mud in the collecting container inside the wet vacuum cleaner so that it could reach the area of the components that are to be protected from the mud and the liquid liquid-dirt mixture. For example, the EP 0 827 709 A2 a device for steam cleaning surfaces, which prevents the annoying dripping of condensate onto a surface that has just been cleaned and which comprises a steam discharge device associated with a steam source.

In the US 5 836 046 A describes a water extraction cleaner that can be used to supply a clean solution to a surface to be cleaned.

The EN 10 2009 028 944 A1 discloses a hand-held soil tillage device comprising a base part and a structurally separate suction unit, as well as a suction turbine.

What the devices mentioned have in common is that a cleaning fluid is contained or stored in the device, and it can be a challenge to protect the suction motor or the suction turbine of the device from this fluid, especially if the device is tilted.

The object underlying the present invention is therefore to provide a wet vacuum cleaner that does not have the deficiencies and disadvantages of the prior art and can be used as a portable, mobile system. In particular, a wet vacuum cleaner is to be developed that allows the user to vacuum up liquids and sludge without cables and in a highly mobile manner. In other words, the object of the invention is to develop a backpack dust extractor that can also process and/or absorb liquids. In particular, the wet vacuum cleaner to be provided should be able to be used in various, frequently occurring work situations that involve tilting the vacuum cleaner in different directions, without potentially vulnerable components such as the turbine, motor, filter cleaning module and/or filter being impaired by the liquids contained in the vacuumed sludge.

The problem is solved by the subject matter of the independent claim. Advantageous embodiments of the subject matter of the independent claim can be found in the dependent claims.

The problem is solved by a portable wet vacuum cleaner, wherein the wet vacuum cleaner comprises a container for collecting a liquid-dirt mixture. The wet vacuum cleaner is characterized in that an upper end of the collecting container comprises an inclined sealing plane, wherein the inclined sealing plane comprises a filter unit. The sealing plane can be inclined, for example, in an angle range of 20 to 60 degrees. Tests have shown that angles of inclination in this angle range are particularly effective in preventing water or mud from penetrating the suction hose.

In the context of the invention, an arrangement of components in a mobile wet vacuum cleaner is also disclosed. The wet vacuum cleaner can in particular be carried on the back of a user. For this purpose, the wet vacuum cleaner can comprise the corresponding fastening means or straps to enable the user to carry the wet vacuum cleaner pleasantly and comfortably. In the sense of the invention, it is particularly preferred that the wet vacuum cleaner has a collecting container, the back of which faces the back of the user when the wet vacuum cleaner is carried by the user on his back. The front of the collecting container is preferably substantially parallel to the back of the collecting container, while a bottom or a bottom surface of the collecting container is formed substantially perpendicular to the back and/or the front of the collecting container. Preferably, the collecting container is closed in an upper region by an upper closure, wherein this upper closure is preferably arranged opposite the bottom or bottom side of the collecting container. In the sense of the invention, it is preferred that the upper closure is also referred to as the top of the collecting container. Preferably, the top of the collecting container comprises an inclined sealing plane, wherein the inclined sealing plane comprises a filter unit of the wet vacuum cleaner. The container for collecting a liquid-dirt mixture is preferably also referred to as a collecting container and the arrangement of components in the backpack vacuum cleaner is referred to as a component arrangement.

A particular advantage of the invention is that the proposed backpack vacuum cleaner can be used regardless of position. In the sense of the invention, the term "independent of position" preferably means that the vacuum cleaner can be used in particular in frequently occurring work situations that can involve the wet vacuum cleaner tipping over. These frequently occurring work situations preferably define permitted tipping states, whereby the inclination of the sealing plane within the collecting container of the backpack vacuum cleaner can advantageously ensure that the proposed wet vacuum cleaner can be used in these permitted tipping states without the vacuum cleaner components, such as the motor, turbine, filter cleaning unit and/or filter, coming into contact with liquid or mud. In particular, permitted tipping conditions exist in the following situations: if a) the wet vacuum cleaner is tilted forwards between 0 and 90 degrees, b) the wet vacuum cleaner is tilted to the side by less than 30 degrees, preferably less than 20 degrees, and/or c) the wet vacuum cleaner is tilted backwards by less than 30 degrees. Accordingly, prohibited tipping conditions can exist in particular if a) the wet vacuum cleaner is tilted forwards by more than 90 degrees, b) the wet vacuum cleaner is tilted to the side by more than 20 degrees, preferably more than 30 degrees, and/or c) the wet vacuum cleaner is tilted backwards by more than 30 degrees. The angles mentioned are preferably viewed from a substantially vertical axis, this substantially vertical axis representing an imaginary or virtual axis which preferably runs substantially parallel to the user's spine. The spatial direction "forward" in the sense of the invention preferably refers to the user "bending forwards", in which the user's upper body bends forwards, i.e. in the spatial direction facing away from the user's back or in the direction of the user's stomach. Preferably, when the user "bends forwards", a distance between the user's face and stomach is shortened. The spatial direction "backward" preferably corresponds to the user "bending backwards", wherein when the user "bends backwards", a distance between the front of the wet vacuum cleaner and the floor is preferably reduced. Preferably, in the context of the present invention, the spatial directions "forward" and "backward" do not correspond to the side surface designations of the collecting container or the wet vacuum cleaner. The side of the wet vacuum cleaner or the collection container facing the user or his back is preferably referred to as the "back" of the wet vacuum cleaner or the collection container, while the opposite side of the wet vacuum cleaner or the collection container is referred to as the "front" of the wet vacuum cleaner or the collection container.

In the sense of the invention, it is particularly preferred that the filter of the wet vacuum cleaner is arranged on a side facing away from the "forward tilting direction". In other words, in the context of the invention, it is preferred that the filter is arranged in the area of the top of the collecting container, specifically in the direction of the front of the collecting container, which is preferably facing away from the user's back when the user is carrying the backpack vacuum cleaner on his back. This preferred arrangement of the filter within the vacuum cleaner advantageously ensures that the filter is not soaked with liquid or comes into contact with it even if the wet vacuum cleaner is tilted, in particular in the spatial direction forwards, as long as the tilting takes place within the permitted angular ranges.

In one embodiment of the invention, it is preferred that the wet vacuum cleaner comprises a gyro sensor that is designed to detect a tipping of the wet vacuum cleaner. The detection of the unauthorized tipping states is preferably carried out with the aid of the above-mentioned angle values and using the gyro sensor. For example, an unauthorized state is detected when a user who is carrying the backpack vacuum cleaner on his back bends forward by more than 90 degrees. Preferably, the wet vacuum cleaner in conjunction with the gyro sensor is capable of switching off the wet vacuum cleaner when unauthorized Tilting conditions can be detected. In the example mentioned, the gyro sensor would detect the presence of an unauthorized tilting condition if the wearer of the wet vacuum cleaner leans forward by more than 90 degrees. The wet vacuum cleaner would then be switched off automatically - for example using a control device that is connected to the gyro sensor and the wet vacuum cleaner or can exchange information and/or control errors with them - in order to prevent the mud or moisture in the vacuum cleaner's collecting container from reaching the area of the filter unit or the sealing plane of the collecting container or the wet vacuum cleaner. The wet vacuum cleaner preferably comprises a gyro sensor that is set up to switch off the wet vacuum cleaner from a tilt angle of 90° "forwards", 20-30° to the left or right and up to 30° "backwards" and thus prevent water from being sucked through the filter into the turbine. In particular, the gyro sensor can communicate with a control unit of the wet vacuum cleaner in such a way that the suction of the liquid-dirt mixture is prevented if an unauthorized tipping state is present. This can be achieved, for example, by switching off the motor and/or the turbine of the wet vacuum cleaner if the gyro sensor detects an unauthorized tipping state. In the sense of the invention, it is preferred that the wet vacuum cleaner is operated in particular in the permitted tipping states, whereby the permitted tipping states correspond in particular to the frequently occurring work situations that can be accompanied by a tipping of the wet vacuum cleaner in the above-mentioned "permitted" angle ranges.

The upper end of the collecting container, which comprises the inclined sealing plane and the filter unit, can preferably also be referred to as the top of the collecting container. The top of the collecting container can preferably have two different sections or be formed by these different sections. In the sense of the invention, it is particularly preferred that the top of the collecting container comprises a substantially horizontal section, wherein the substantially horizontal section is designed to connect a rear side of the collecting container and the inclined sealing plane. In other words, the substantially horizontal section of the top of the collecting container is located between the inclined sealing plane and the rear side of the collecting container. In still other words, the collecting container comprises an upper horizontal edge so that the largest possible tilt angle of the wet vacuum cleaner can be achieved without the collected water flooding the sealing surface and, for example, the components contained therein, such as the filter unit. The sealing plane preferably also protects the components arranged above the sealing plane, such as the turbine, filter cleaning unit and/or motor, due to its position. Due to the position of the sealing plane within the wet vacuum cleaner or of the backpack vacuum cleaner, a sufficiently large space is provided in the upper area for the optimized arrangement of the components to be protected from the dirty water, while in the lower area of the vacuum cleaner there is sufficiently large space to accommodate the liquid-dirt mixture. The area above the sealing plane is preferably referred to as the sealing space in the sense of the invention. In other words, the inclined arrangement of the sealing plane, which includes the filter unit, enables an optimal division of space within the proposed wet vacuum cleaner. On the one hand, this means that a large amount of sludge can be absorbed before the collection container needs to be emptied. On the other hand, the components of the vacuum cleaner that are to be protected from the sludge, such as the motor, turbine, filter cleaning unit and/or filter unit, can be optimally protected from coming into contact with the liquid. The preferred arrangement of the components in the proposed wet vacuum cleaner therefore protects them particularly effectively against unwanted soaking, so that the proposed invention surprisingly makes it possible to provide a portable backpack wet vacuum cleaner that can also be used in frequently occurring work situations that involve the wet vacuum cleaner tipping over. The invention therefore represents a departure from the state of the art, as experts had previously assumed that wet vacuum cleaners could not be provided as backpack vacuum cleaners. Experts had developed this prejudice because it had previously been assumed that it was not possible to arrange the components of a mobile, portable wet vacuum cleaner in such a way that the vulnerable components of the vacuum cleaner could be prevented from becoming wet or soaked even if the vacuum cleaner tipped over due to bending movements by the user.

It is preferred in the sense of the invention that a filter cleaning module of the wet vacuum cleaner is arranged centrally above the filter unit. In other words, the wet vacuum cleaner preferably comprises a filter cleaning module which is arranged in particular substantially centrally above the filter unit. Since the filter unit is preferably arranged in the inclined sealing plane of the collecting container, it is preferred in the sense of the invention that the filter cleaning unit is arranged in the extension of an imaginary central axis which preferably runs centrally through the filter unit. The arrangement of the filter cleaning module is also shown in the figures. It is preferred in the sense of the invention that the filter cleaning module is also referred to as the APFC module of the wet vacuum cleaner. It is particularly preferred in the sense of the invention that the filter cleaning unit is placed substantially centrally above the filter. This substantially central arrangement The filter cleaning unit above the filter advantageously ensures optimal filter cleaning.

According to the invention, it is preferred that the wet vacuum cleaner comprises a power supply unit, wherein the power supply unit is arranged essentially above the essentially horizontal section of the upper end of the collecting container. The power supply unit can in particular be accumulators (batteries) that enable cordless use of the wet vacuum cleaner. Preferably, the wet vacuum cleaner has a turbine, wherein the turbine is arranged essentially above the essentially horizontal section of the upper end of the collecting container. In other words, according to the invention, it is preferred that the power supply unit and the turbine are arranged next to one another and in spatial proximity to the rear of the collecting container. An example arrangement of the power supply unit and turbine of the wet vacuum cleaner is shown in the figures. Because the energy supply unit and the turbine are arranged above the sealing plane of the wet vacuum cleaner, the invention effectively prevents water, mud or liquid from penetrating the upper area of the vacuum cleaner, so that the energy supply unit and the turbine are effectively protected from water, mud or liquid. In the sense of the invention, it is particularly preferred that the upper area of the wet vacuum cleaner forms a sealed area or a sealing area, with the turbine and the energy supply unit being arranged in this sealing area. The preferred arrangement of the energy supply unit and the turbine next to each other and in spatial proximity to the rear of the collecting container, in particular in the sealing area of the wet vacuum cleaner, in particular achieves an optimal weight distribution within the wet vacuum cleaner, which is particularly advantageous when the backpack vacuum cleaner is carried on the back by a user. In particular, the "heavy" components, such as batteries and turbine, are close to the user thanks to this preferred arrangement, so that the weight of the vacuum cleaner is not unnecessarily increased by a distant arrangement of these components.

According to the invention, it is preferred that a suction hose opens into the collecting container in the area of a suction hose connection with an inlet nozzle, the suction hose connection being arranged in the area of the upper end of the collecting container. According to the invention, it is particularly preferred that the hose inlet is arranged as high up in the collecting container as possible. In addition, it may be preferred that the suction hose connection is arranged between the filter unit and the essentially horizontal section of the upper end of the collecting container.

In the sense of the invention, it is particularly preferred that the suction hose connection opens into the collecting container in the region of the inclined sealing plane. The preferred arrangement of the hose inlet as high up as possible in the collecting container advantageously prevents water from running out of the collecting container through the hose when the vacuum cleaner is tilted.

The inlet nozzle can preferably be designed as a diffuser. In the sense of the invention, it is particularly preferred that the rear of the collecting container serves as a baffle for the water-dirt mixture that is sucked in. Preferably, an opening of the hose inlet on the collecting container side is directed towards the rear of the collecting container, so that the dirt-liquid mixture that is sucked into the collecting container with the vacuum cleaner is initially sucked into the collecting container essentially horizontally, whereby the rear of the collecting container can act as a baffle to slow down or slow down the mixture. By using the rear of the collecting container as a baffle, the sucked-in medium cannot reach the filter directly. This prevents the sucked-in material from reaching the area of the filter and wetting or contaminating the filter. In particular, the essentially horizontal suction of the dirt-liquid mixture enables an optimal distribution of the dirt in the collection container, which helps to ensure that the mud remains in the area of the bottom of the collection container, even if the wet vacuum cleaner is tilted.

It is preferred in the sense of the invention that the wet vacuum cleaner comprises probes for detecting a surface of the liquid-dirt mixture. It is particularly preferred in the sense of the invention that a filling level of the collecting container can be determined using the probes. In other words, the probes are designed to limit a filling level of the collecting container by determining the filling level and, if necessary, appropriate measures can be derived. It is particularly preferred in the sense of the invention that the data determined using the probes are evaluated by a control device of the wet vacuum cleaner, wherein the control device is particularly designed to initiate appropriate measures depending on the determined filling levels within the collecting container. For example, the amount of liquid-dirt mixture in the collecting container can be limited by a length of the probes by switching off the suction process when the probes determine that a critical filling level of the collecting container is exceeded or that the liquid-dirt mixture comes too close to the filter unit.

In the sense of the invention, it is particularly preferred that the probes are designed to determine the surface of the liquid-dirt mixture in the collecting container, so that contact of the liquid-dirt mixture with the filter unit can be prevented. Preferably, the probes extend beyond the lowest point of the filter into the container in order to detect the surface of the liquid-dirt mixture. In the sense of the invention, the surface of the liquid-dirt mixture can preferably also be referred to as the fill level of the collecting container, whereby the person skilled in the art knows that this fill level can also be inclined in the context of the present invention. This can happen, for example, when the user of the wet vacuum cleaner, who carries the wet vacuum cleaner, which is preferably designed as a backpack vacuum cleaner, on his back, bends forward. In the sense of the invention, it is preferred that the probes are arranged above and/or below or to the right and/or left of the filter unit. In other words, the probes can be arranged between the filter unit and the suction hose inlet or between the filter unit and the essentially horizontal section of the upper end of the collecting container. This arrangement of the probe is preferably referred to as "left" of the filter unit. On the other hand, a probe can be arranged between the filter unit and the front of the collecting container. This arrangement of the probe is preferably referred to as "right" of the filter unit. Preferably, the probes form an essentially semicircular arrangement, wherein a radius of the essentially semicircular probe arrangement can be arranged essentially perpendicular to the sealing plane of the collecting container. Advantageously, the probes ensure that the turbine or the suction device is switched off in the event of contact with mud or water in order to protect the motor and/or the filter.

In accordance with the invention, it is preferred that the filter unit comprises a flat pleated filter or is formed by a flat pleated filter. In accordance with the invention, it may alternatively be preferred to use a cartridge filter, whereby such a cartridge filter may have a ball shut-off element in its interior. The ball shut-off element preferably comprises a ball which floats on the water or sludge as the fill level in the collecting container increases and may possibly block the inlet to the turbine.

In the sense of the invention, it is preferred that the filter comprises a polyester material (PES) or is formed from a PES material. In particular, the filter can have a surface coating. By using a filter made of PES with a surface coating, seepage of water or mud through the filter to the turbine and/or the motor of the wet vacuum cleaner can advantageously be delayed. In particular, this prevents moisture and mud from penetrating the sealing area above the Sealing level prevented. In the context of the present invention, a universal filter can be used in particular which is water-tight outside the suction insert, for example for 10 minutes.

Preferably, a seal can be achieved between the suction head of the wet vacuum cleaner and the collecting container with a rubber seal and by pressing the head onto the container. In particular, foam rubber can be used as the material for the rubber seal. The seal can preferably be designed as a hinge for hanging with a toggle lever for tightening. The suction head can preferably be hung on the turbine side, which preferably corresponds to a user side, and clamped onto the container with one or more toggle levers in order to apply the highest and most even pressure possible to the seals. This ensures a particularly good seal between the container and the suction head.

Further advantages emerge from the following description of the figures. The figures, the description and the claims contain numerous features in combination. The person skilled in the art will also expediently consider the features individually and combine them into further meaningful combinations.

Fig. 1

Seitenansicht einer bevorzugten Ausgestaltung der Erfindung

Fig. 2

verschiedene Kippzustände einer bevorzugten Ausgestaltung des Nass-Saugers

In the figures, identical and similar components are numbered with the same reference numerals. They show:

Fig.1

Side view of a preferred embodiment of the invention

Fig.2

different tilting states of a preferred design of the wet vacuum cleaner

Examples of implementation:

Figure 1 shows a side view of a preferred embodiment of a proposed wet vacuum cleaner (1). The wet vacuum cleaner (1) is shown, which is designed in particular as a portable backpack vacuum cleaner. The wet vacuum cleaner (1) can be carried by a user on his back, whereby the Figure 1 The preferred embodiment of the invention shown comprises carrying straps (17) which support or facilitate carrying the wet vacuum cleaner (1). The wet vacuum cleaner (1) comprises a collecting container (2) in which a liquid-dirt mixture (3, see Figure 2 ) or mud (3, see Figure 2 ) that was previously sucked in by the wet vacuum cleaner (1) through the suction hose (12). The sludge (3) reaches the collecting container (2) via a suction hose connection (13), the suction hose (12) in particular comprising an inlet nozzle (14) in the area where it joins the collecting container (2). The inlet nozzle (14) can preferably be designed as a diffuser, an opening of the inlet nozzle (14) being designed essentially parallel to a rear side (8) of the collecting container (2). The rear side (8) of the collecting container (2) can therefore function as a baffle for the sucked-in liquid-dirt mixture (3).

The collecting container (2) preferably forms the lower region of the wet vacuum cleaner (1). The collecting container (2) is preferably delimited at the top by an upper end (4), which also forms the boundary to an upper region of the wet vacuum cleaner (1). The upper region of the wet vacuum cleaner (1) is preferably referred to as a sealing region in the sense of the invention. The upper end (4) is preferably formed by two sections (5, 7), wherein a substantially horizontal section (7) is oriented towards the rear (8) of the collecting container (2), while an inclined sealing plane (5) is oriented towards the front of the collecting container (2). The substantially horizontal section (7) of the upper end (4) of the collecting container (2) is preferably substantially horizontal in relation to a flat bottom surface of the collecting container (2) of the wet vacuum cleaner. The essentially horizontal upper edge (4) of the collecting container (2) enables in particular a particularly large tilt angle of the wet vacuum cleaner (1) without the collected sludge (3) in the collecting container (2) flooding the sealing surface (5) or the filter unit (6) or getting into the suction hose (12).

The sealing plane (5) preferably forms the second section of the upper end (4) of the collecting container (2). The sealing plane (5) comprises the filter unit (6) of the wet vacuum cleaner (1), which is to be protected in particular from contact with the sludge (3). To ensure this, the wet vacuum cleaner (1) comprises probes (15) with which the level of the sludge (3) in the collecting container (2). Preferably, the probes (15) form a substantially semicircular arrangement, the lowest point of which extends into the collecting container (2) and, upon contact with the sludge (3), emits a signal which can be evaluated by a control device (not shown) of the wet vacuum cleaner (1). Within the meaning of the invention, it may be preferred, for example, that the wet vacuum cleaner (1) switches off automatically when the probes (15) are in contact with the sludge (3) or detect a fill level of the dirt-liquid mixture (3) which is classified as questionable or dangerous. By providing the probes (15), which, for example, enclose the filter unit (6) in the sealing plane (5), it can be prevented that the filter unit (6) comes into contact with the sludge (3). This could lead to mud (3) or liquid (3) getting into the space above the sealing plane (5) due to the filter (6) becoming wet. Such undesirable wetting is effectively avoided due to the arrangement of the filter unit (6) in the inclined sealing plane (5) and the components in the sealing space arranged above the collecting container (2) are effectively protected from water and mud (3). In particular, the turbine (11) and the energy supply unit (10) are arranged in the sealing space arranged above the collecting container (2) (only one of the two objects can be seen in the side view). Preferably, the turbine (11) and the energy supply unit (10) are located above the essentially horizontally formed section of the upper end (4) of the collecting container (2), wherein the turbine (11) and the energy supply unit (10) can in particular be arranged next to one another in the sealing space.

The filter cleaning unit (9), also known as the APFC module, extends into the sealing chamber arranged above the collecting container (2) above the filter unit (6) and behind the filter unit (6) in terms of flow. It is also protected from mud (3) and water by the sealing plane (5) and the filter unit (6) contained therein. The wet vacuum cleaner (1) can also have a gyro sensor (16).

Figure 2 shows different tilting states of a preferred embodiment of the wet vacuum cleaner (1). Figure 2a shows the wet vacuum cleaner (1) in an upright position. In this position, the wet vacuum cleaner (1) is carried, for example, by a user standing upright, who does not bend forwards, backwards or to the side. All tilt angles are therefore zero degrees and the wet vacuum cleaner (1), which is in Figure 2a is in a permitted tilting state, whereby the Figure 2a The upright state of the wet vacuum cleaner (1) shown is a special state of the permitted state. In the permitted tilting state, the proposed wet vacuum cleaner (1) can ensure that the filter unit (6) does not get soaked and that no water or mud (3) from the collecting container (2) enters the sealing space above the sealing plane (5) or into the suction hose (12). In the Figure 2a In the application shown, the level of the liquid-dirt mixture (3) is below the probes (15), which preferably form a semicircular arrangement. The probes (15) preferably enclose the filter unit (6), which lies in the inclined sealing plane (5).

Also Figure 2b shows a permitted tipping state, whereby the wet vacuum cleaner (1) is in the Figure 2b example, is inclined forwards by 40 degrees. This results in an inclined position of the collecting container (2), so that the sludge (3) also forms an inclined filling level surface within the collecting container (2). The filling level of the sludge (3) is in the Figure 2b In the example shown, they are located just below the probes (15) that can detect the level of the sludge (3) or can emit a signal when they come into contact with the liquid-dirt mixture (3). It can be clearly seen that the level of the sludge (3) in the Figure 2b The tilting of the wet vacuum cleaner (1) forwards as shown in the figure is not sufficient to reach the filter unit (6). In addition, the Figure 2b In the permitted tipping state shown, no sludge (3) enters the suction hose (12). Furthermore, the essentially horizontal section (7) of the upper side (4) of the collecting container (2) in conjunction with the sealing plane (5) protects the turbine (10) and the energy supply unit (10) from the sludge (3).

Figure 2c shows a transition between a permitted and a prohibited tipping state of the wet vacuum cleaner (1). Figure 2c In the embodiment of the invention shown, there is a tilt of 90 degrees in the spatial direction "forward", which just about represents a permitted tilting state, while tilting states with larger angles of inclination represent prohibited tilting states in which the Sass vacuum cleaner (1) is automatically switched off. In the prohibited tilting state of the wet vacuum cleaner (1), for example, mud (3) can get into the suction hose (12). Figure 2c shows clearly that despite the strong forward tilting of the wet vacuum cleaner (1), the filter unit (6) is further protected from contact with the sludge (3) by the inclination of the sealing plane (5). Figure 2c The tilting state of the wet vacuum cleaner (1) shown is assumed, for example, when a user who is carrying the wet vacuum cleaner (1) on his back bends forwards considerably. Preferably, the wet vacuum cleaner (1) is set up in such a way that when an unauthorized tilting state is assumed, the turbine (11) is switched off so that the suction process is terminated. This protects the motor and the filter (6) of the wet vacuum cleaner (1) from moisture, contamination and damage. Other unauthorized states can be assumed, for example, by a strong tilting to the side or backwards. It can also happen that a user bends to the side as well as forwards or backwards. Preferably, the The proposed wet vacuum cleaner (1) is designed to deal with overlapping tipping states and, in the event of a danger to the sensitive components of the wet vacuum cleaner (1), such as the turbine (11), filter (6), cleaning unit (9) and/or motor, to switch off the turbine (11) or to terminate the suction process.

List of reference symbols

1

Wet vacuum cleaner

2

Collection container

3

Liquid-dirt mixture/sludge

4

upper end of the collecting container

5

Density level

6

Filter unit

7

essentially horizontal section

8th

back

9

Filter cleaning module

10

Power supply unit

11

turbine

12

Suction hose

13

Suction hose connection

14

Inlet nozzle

15

Probes

16

Gyro sensor

17

Carrying straps

Claims (11)

1. Portable wet suction device (1) comprising a container (2) for collecting a liquid/dirt mixture (3),
   characterized in that
   an upper termination (4) of the collecting container (2) comprises a sloping sealing plane (5), wherein the sloping sealing plane comprises a filter unit (6).
2. Portable wet suction device (1) according to Claim 1,
   characterized in that
   the upper termination (4) of the collecting container (2) comprises a substantially horizontally formed section (7), wherein the substantially horizontally formed section (7) is designed to connect a rear side (8) of the collecting container (2) and the sloping sealing plane (5).
3. Portable wet suction device (1) according to Claim 1 or 2,
   characterized in that
   a filter cleaning module (9) of the wet suction device (1) is arranged centrally above the filter unit (6).
4. Portable wet suction device (1) according to Claim 2 or 3,
   characterized in that
   the wet suction device (1) comprises an energy supply unit (10), wherein the energy supply unit (20) is arranged substantially above the substantially horizontally formed section (7) of the upper termination (4) of the collecting container (2).
5. Portable wet suction device (1) according to one of preceding Claims 2 to 4, characterized in that
   the wet suction device (1) comprises a turbine (11), wherein the turbine (11) is arranged substantially above the substantially horizontally formed section (7) of the upper termination (7) of the collecting container (2).
6. Portable wet suction device (1) according to Claim 5,
   characterized in that
   the energy supply unit (10) and the turbine (11) are arranged side-by-side and in spatial proximity to the rear side (8) of the collecting container (2).
7. Portable wet suction device (1) according to one of preceding Claims 2 to 6, characterized in that
   a suction hose (12) opens into the collecting container (2) by means of an inlet connector (14) in the region of a suction hose connection (13), wherein the suction hose connection (13) is arranged in the region of the upper termination (4) of the collecting container (2).
8. Portable wet suction device (1) according to Claim 7,
   characterized in that
   the inlet connector (14) is designed as a diffuser.
9. Portable wet suction device (1) according to one of the preceding claims, characterized in that
   the wet suction device (1) comprises probes (15) for detecting a surface of the liquid/dirt mixture (3).
10. Portable wet suction device (1) according to one of the preceding claims, characterized in that
    the wet suction device (1) comprises a gyro sensor (16) which is designed to detect tilting of the wet suction device (1).
11. Portable wet suction device (1) according to one of the preceding claims, characterized in that
    the filter unit (6) comprises a flat-fold filter.

Images