CN115369617A

CN115369617A - Water-conducting household appliance and method for controlling a water-conducting household appliance

Info

Publication number: CN115369617A
Application number: CN202210550138.3A
Authority: CN
Inventors: E·毛雷尔
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2021-05-18
Filing date: 2022-05-18
Publication date: 2022-11-22
Also published as: EP4091521A1; DE102021205007A1

Abstract

A water-conducting household appliance (1) is proposed. The water-conducting household appliance (1) comprises: a housing (2) having a process chamber (4) accommodated therein; a water supply device (3) designed to supply water to the treatment chamber (4); a shut-off device (5) designed to shut off the water supply; at least one measuring device (6) which is designed to detect a liquid outside the housing (2) and to output a signal; and a control unit (7) which is designed to control the shut-off device (5) and/or to output a notification on the basis of the signal of the measuring device (6). Furthermore, a method for controlling a water-conducting household appliance (1) is proposed.

Description

Water-conducting household appliance and method for controlling a water-conducting household appliance

Technical Field

The invention relates to a water-conducting household appliance and a method for controlling a water-conducting household appliance.

Background

It is known to provide leak protection systems in water-conducting household appliances, such as washing machines or dishwashers. In known water-conducting domestic appliances, a closed base is usually provided, which has a partial water collection trough, which is the lowest point of the base. A float switch is disposed in the sump. If the interior of the water-conducting household appliance is not sealed and water enters the mounting, the water lifts the float of the float switch and actuates a switch, so that the leak-proof system coupled to the switch is closed at the inlet of the water-conducting household appliance. Then, the water supply is interrupted permanently until the float switch is lifted. In this case, the base support in the current system is designed such that no water can leave the housing of the water-conducting household appliance.

The reason for the water in the region of the mounting can be a non-sealing within the water guide assembly of the water-conducting household appliance and/or a non-sealing of the internal water-conducting duct.

With the above design, the currently known household appliances can only detect water leaks inside the household appliance. In contrast, these systems are not designed to recognize water outside the water-conducting household appliance and then trigger a corresponding countermeasure.

Disclosure of Invention

It is therefore an object of the present invention to provide a water-conducting household appliance which can detect liquids outside the system boundary of the water-conducting household appliance and can initiate further actions in accordance therewith.

This object is achieved by a water-conducting household appliance having the features of the invention and by a water-conducting household appliance having the features of the invention.

According to one aspect of the present invention, there is provided a water-conducting domestic appliance comprising: a housing having a process chamber accommodated therein; a water supply device configured to supply water to the processing chamber; a shut-off device designed to shut off the water supply; at least one measuring device designed to detect liquid outside the housing and to output a signal; and a control unit which is designed to control the shut-off device and/or to output a notification on the basis of the signal of the measuring device.

Compared with the known prior art, the invention provides the following effects: the existing shut-off device is controlled not only on the basis of the liquid detected inside the water-conducting household appliance, but also on the basis of the liquid detected outside the water-conducting household appliance. The shut-off device can be, for example, a leak-proof system, which is arranged at the water supply device that supplies water to the water-conducting household appliance. In other words, the shut-off means may be controlled based on information about the presence of liquid outside and inside the housing.

For example, liquid can be present outside the housing of the water-conducting household appliance when the liquid flows out of the opening of the water-conducting household appliance and flows outside the housing towards the floor. Furthermore, the liquid can flow out of the water supply, in particular between a connection of the water supply and the shut-off device. For example, sealing elements (O-rings, flat gaskets, etc.) or intermediate hoses between a water connection (e.g. a water tap) and a shut-off device can fail, thereby allowing unhindered water to escape. This liquid will be detected by the measuring means and the control unit will accordingly cause a notification to be output, so that the user can manually turn off the tap. Alternatively, the control unit can also be designed to interrupt the entire water supply in this case. Within the framework of home automation, also conceivable are: the control unit can control the central shut-off valve and can thus interrupt the water supply.

The water-conducting household appliance may be a laundry treatment appliance, a dishwasher or a water-conducting kitchen appliance. The housing can be a system boundary between the interior space of the water-conducting household appliance and the space outside the housing. The water-conducting household appliance can have an operating position in which it normally operates. In the following, the upper and lower faces always relate to the operating position of the water-conducting domestic appliance. A closed mounting can be provided inside the housing. A local low point may be provided in the mounting, in which low point the sensor means monitors whether liquid is present in the low point. In this way, it is possible to monitor whether liquid collects in the base support inside the water-conducting household appliance.

In water-conducting domestic appliances, the treatment chamber can be, for example, a lye container in the case of a laundry treatment appliance or a washing space for dishes in the case of a dishwasher. Furthermore, the treatment chamber can be a boiler of a water-conducting domestic appliance, in which boiler the supplied water is heated.

The water supply device can be, for example, a hose which leads from a tap or a wall connection to the water-conducting household appliance. Alternatively, the water supply may also be a rigid tube. The water supply may be constituted by a flexible inner hose which is sheathed by a flexible outer hose. The outer tube can in this case concentrically enclose the inner tube. The outer hose may be watertight so that it can fully capture water and transport it to the interior of the housing, for example, in the event of a leak in the inner hose.

The shut-off means may be a leak-proof system with a solenoid valve which can close the water supply. The shut-off device may be arranged in the water supply device. Preferably, the shut-off device is arranged directly on the wall connection (for example a water tap) and the water supply device extends from the shut-off device to the housing of the water-conducting household appliance. It is thereby ensured that by operating the shut-off means further flow of water to the water supply means can be prevented.

The inner hose of the water supply device can be connected to further water-conducting components inside the water-conducting household appliance, whereas the outer hose of the water supply device can be connected to the inner space of the housing, so that water can flow from the outer hose directly into the housing. This ensures that in the event of a leak in the inner hose, water from the leak can be supplied via the outer hose to the base in the housing, so that the sensor located there can detect this water and can correspondingly control the shut-off device in order to shut down the water supply.

The measuring device may for example comprise a float switch inside the housing. The measuring device can detect the liquid outside the housing in that the liquid outside the housing is fed to the liquid sensor inside the housing. In addition or alternatively, the measuring device can have a liquid sensor outside the housing, which can thus directly detect the liquid outside the housing. That is, the measuring device may have at least one liquid sensor to determine the presence of liquid outside the housing. According to a further aspect of the invention, the measuring device has at least two liquid sensors, one of which is arranged inside the housing and one of which is arranged outside the housing. This makes it possible to reliably determine whether the liquid has flowed out due to a leak inside or outside the housing. Accordingly, a notification or control signal may be output.

The control unit may include a processor that may receive, process signals, and output control instructions. For example, a control unit that is already provided in the household appliance may be used as the control unit.

The humidity sensor may communicate with the control unit by cable or by radio. For example, the measuring means may comprise a humidity sensor, which is external to said housing and connected to the control unit by means of wireless communication (e.g. WLAN, near field communication, bluetooth, etc.). The measuring device can have an energy source, for example a battery, which supplies the moisture sensor. In this way, a further function can be added to a possibly present leakage protection system of the water-conducting household appliance (which can detect a leakage inside the household appliance), since the presence of liquid outside the housing can also be detected with the measuring device. Independently of where the liquid is detected, the control unit may actively control the shut-off device and/or output a notification after the liquid detection is completed. The notification may be output to the user, for example, via a WLAN or smart home application. Thus, a user may, for example, get information on his smartphone: the measuring device has detected the liquid. Further, the information may also include the following description: where the liquid is detected (i.e., either within the housing or outside the housing). Thus, the user can take appropriate countermeasures. At the same time or alternatively, the control unit can control the shut-off device in such a way that no further water is supplied to the water-conducting household appliance.

The invention thus provides a possibility of providing comprehensive protection against undesired water leakage in a water-conducting household appliance in addition to the known leakage protection system by means of a measuring device. This is achieved by: not only are sensors for monitoring arranged inside the housing, but also the surroundings of the water-conducting household appliance are also monitored. This can be achieved by: either an additional humidity sensor is arranged outside the housing and is connected directly to the control unit of the water-conducting household appliance, or water leaking outside the household appliance is supplied to the humidity sensor arranged in the household appliance. It is thereby ensured that the water-conducting domestic appliance can be operated without user supervision, since in the event of damage, the user can be immediately informed and/or damage that may occur is prevented and/or minimized by automatically controlling the shut-off device.

Preferably, the measuring means comprise at least one conductivity sensor. This is typically the case in the prior art: a float sensor or the like is used to detect liquid inside the housing of the water-conducting household appliance. However, for this purpose, a structural design is required which causes the water level to rise correspondingly and the float switch of the float sensor to move correspondingly in order for the sensor to react. This is disadvantageous when the design is not possible and/or the amount of water present is so small that the response sensitivity of the floating sensor is not sufficient to reliably detect the presence of liquid.

In contrast, even a trace amount of liquid can be detected without any problem with the conductivity sensor. In this case, the conductivity sensor may comprise two electrodes, to which a defined voltage is applied. For this purpose, the conductivity sensor can be designed for continuously measuring the resistance between two electrodes. The resistance is approximately infinitely high if the two electrodes are neither directly nor indirectly connected to each other. Conversely, if the two electrodes are in electrical connection with each other, the resistance drops rapidly. This may occur, for example, when two electrodes are in contact with the same body of water. Thus, the conductivity sensor may detect a change in conductivity and determine the presence of liquid on the electrodes of the conductivity sensor based thereon.

Preferably, the two electrodes are at least 4cm from each other. This ensures that false alarms are not triggered: this may be the case if the two electrodes are too close to each other and are connected to each other, for example by a damp dust wadding or the like. In another preferred embodiment, the two electrodes are at a mutual distance of at least 2cm. This provides advantageous effects, in particular when employed in laundry treatment appliances and/or dishwashers: the liquid can be detected at an earlier moment, i.e. even when a relatively small amount of liquid is present. According to another aspect of the invention, the two electrodes are spaced apart from each other by about 1cm. Thus, the conductivity sensor does not have to be arranged at a specially designed place, which ensures that a certain liquid depth can be set quickly even in the case of small amounts of liquid to ensure a fast response of the sensor. In contrast, a moisture sensor with electrodes at a distance of about 1cm from one another can be arranged at any desired location, since it can already detect a small water level.

Furthermore, this distance also ensures adequate protection against false triggering: this can occur, for example, when, in the case of a laundry treatment appliance, moist laundry is removed from the drum and drops of some liquid fall onto the floor.

Preferably, the housing has at least one opening and the measuring device comprises at least one catch basin arranged on the housing such that liquid flowing out of the at least one opening can be caught by the at least one catch basin.

The openings can be, for example, the following openings in a water-conducting household appliance: which establishes a connection between the outside of the housing and the inside of the housing through the system boundary. In this way, in the case of a laundry treatment appliance, the opening can be, for example, a laundry treatment agent drawer and/or an inlet to the treatment chamber. Furthermore, the opening may be a flap of the dishwasher. The opening may be any opening of the water-conducting household appliance which overcomes the system boundary between the interior and the exterior of the housing.

By means of the catch channel arranged below the opening, liquid flowing out of the opening can be caught by means of a passive widening of the water-conducting household appliance, so that it does not flow outside the water-conducting household appliance to the ground and cause damage there.

By capturing the liquid flowing out of the opening, damage caused by the liquid (e.g. furniture or real estate or the like) can be prevented. The measuring device may identify the liquid captured in the capture tank and control the shut-off device and/or output a notification as described above.

In this case, the catch channel can extend, for example, on the base of the water-conducting household appliance over the entire width thereof. This ensures that the liquid flowing down on the housing of the water-conducting domestic appliance can also be reliably captured. In this case, a single catch basin can be provided on the water-conducting household appliance. Thereby, the appearance of the water guiding household appliance is not affected by the catch tank and the degree of freedom of design is increased.

Preferably, the at least one catch basin is designed, in particular inclined, such that the caught liquid can be guided to a collection point and the measuring device is preferably designed for detecting the liquid at the collection point.

The catching groove may have a U-shaped or V-shaped cross section in terms of cross section. This makes it possible to reliably trap the liquid in the trap tank. Furthermore, the catching groove can be inclined, so that the caught liquid can be reliably guided out. The collection point can be designed such that the cross section of the catch basin widens there. In this way, a certain amount of liquid can be collected at the collection point without the liquid overflowing from the catch basin and flowing onto the floor or furniture. Thus, during the time between the first liquid outflow and the cut-off by the cut-off means, the outflowing liquid can be reliably captured and stored (i.e. in the capturing trough and/or the collection point) to prevent possible damage. Preferably, the catch basin has a containment volume of greater than 100 ml. Thereby, a sufficient period of time can be spanned before activating the shut-off means without liquid flowing out of the catch basin. According to another aspect of the invention, the catch basin has a containment volume of greater than 200 ml. In this case, water can be adequately blocked by the catch basin and/or the collection point even in the case of large leaks.

Preferably, at least two openings are provided on the housing and a catch basin is preferably associated with each opening, the openings having a collection point associated with each catch basin or a common collection point.

In other words, each opening in the housing of the water-conducting household appliance can have its own and separate catch groove. Each opening in the housing of the water-conducting household appliance can also have its own collection point. Thereby, it is possible to determine from which opening the liquid has flowed out, in addition to detecting the liquid at the collection point. This information can be output by the control unit to the user, for example as a notification. Alternatively, different catch tanks may also have a single collection point to which liquid from all catch tanks can be fed. The housing can thus be designed more compactly, since the collection point requires little space.

Preferably, the at least one collection point is arranged inside the housing.

Thereby, liquid captured by the at least one capture slot may be transported from outside the housing to inside the housing through the system boundary. To this end, the at least one catch groove can extend through an opening in the housing into the inner space of the housing. In the interior of the housing, the liquid can then be supplied, for example, to a moisture sensor present there. In particular, the liquid captured outside the housing can be conveyed to the shoe and in particular to a local water collection sump. The water-conducting domestic appliance can therefore utilize the existing moisture sensor by means of passive extension to detect the presence of liquid outside the housing. Furthermore, a plurality of collection points can also be provided in the housing. To this end, each catch groove extends into the housing towards the respective collection point. Thus, as described above, the advantages provided are: it is possible to determine from which opening the liquid flows because each catch basin can correspond to a determined opening.

Preferably, the measuring device comprises a liquid sensor, in particular a conductivity sensor, and the liquid sensor is preferably arranged at the at least one collection point, so that liquid at the at least one collection point can be detected.

Thus, each capture tank may have its own liquid sensor, so that the presence of liquid can be determined individually for each tank. For example, the trough may be designed to be pocket-shaped and the collection point may be located at the lowest point of the catch trough. The electrodes of the conductivity sensor may be arranged at the side of the capture tank. In this case, the electrodes are preferably arranged above the level of the lowest point of the catch basin in such a way that the conductivity sensor is activated from a defined water level in the catch basin or in the collection point. Thereby, false triggering can be prevented, since the conductivity sensor is activated only when the water level in the catch basin or the collection point rises above a predetermined level. Preferably, the electrodes of the conductivity sensor are at the lower third of the total height of the collection point or capture tank. A particularly advantageous operation can be achieved in this case, since the sensor can be activated sufficiently early before the collection point or catch basin overflows and false triggering can still be avoided.

Preferably, the measuring device comprises a floor moisture sensor, in particular a conductivity sensor, wherein the floor moisture sensor is preferably arranged below the housing in the operating state of the water-conducting household appliance.

Preferably, the humidity sensor is in contact with the floor below the water-conducting domestic appliance. In this case, in particular the electrodes of the conductivity sensor are in contact with the ground. Preferably, the electrodes are at a distance of at least 2cm from each other. Thereby, false triggering can be avoided. The electrodes can be pretensioned by means of a tensioning device in such a way that they are reliably in contact with the ground. Thereby, the electrodes can reliably detect the presence of liquid under the housing. According to a further aspect of the invention, the electrically conductive leg of the water-conducting domestic appliance is used as an electrode of the conductivity sensor. In this case, for example, a voltage is applied to the legs of the water-conducting household appliance, so that the presence of moisture or liquid below the housing of the water-conducting household appliance can be reliably detected. Preferably, a voltage is applied to at least three legs of the water-conducting household appliance, so that even small surface liquid leaks can be detected. The legs are designed such that they comprise electrically conductive elements which are in contact with the ground.

Preferably, the measuring device comprises a moisture sensor which is designed as a conductivity sensor having at least two electrodes, wherein preferably the electrodes have a distance of at least 3cm, preferably at least 2cm, from one another.

Within this range, sufficient sensitivity for detecting liquids can be achieved without causing an increase in false triggering.

According to a further aspect of the invention, a method for controlling a water-conducting household appliance is provided, wherein the method comprises the following steps: providing one of the water-conducting domestic appliances as described above; detecting the liquid outside the housing and controlling a shut-off device, thereby shutting off the water supply to the water-conducting household appliance, and/or outputting a notification: there is a liquid outside the housing.

The advantages and designs mentioned in connection with the apparatus apply in a similar manner also to the method.

Individual aspects or features of the embodiments may be combined with other aspects or features of other embodiments and form new embodiments.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings.

Shown in the drawings are:

FIG. 1: according to the water-conducting household appliances of the prior art,

FIG. 2: according to the water-guiding domestic appliance of the prior art,

FIG. 3: according to a water-conducting household appliance according to an embodiment of the present invention,

FIG. 4: according to another embodiment of the water leading household appliance of the present invention,

FIG. 5: according to another embodiment of the water leading household appliance of the present invention,

FIG. 6: a water-conducting domestic appliance according to a further embodiment of the present invention.

Detailed Description

Fig. 1 shows a schematic and perspective view of a laundry treatment appliance 100 known from the prior art. The laundry treating appliance 100 has a treating chamber 40 for treating laundry. Furthermore, the laundry treatment appliance 100 has a housing 20, which defines an inner space. In this interior space, a measuring device 60 is arranged, which can detect the presence of water inside the laundry treatment appliance 100. In addition, the laundry treating appliance 100 is connected to a water source using a water supply device 30. A shut-off device 50 is provided in the water supply device 30. If the measuring device 60 now detects liquid, the shut-off device 50 is controlled in such a way that it shuts off the water supply to the water-conducting household appliance.

Fig. 2 shows a schematic front view of the laundry treating appliance in fig. 1. The laundry treatment appliance 100 also has a treatment agent drawer 90. Furthermore, the laundry treatment appliance 100 has an opening in the form of a porthole as an inlet to the treatment chamber. Not only the treating agent drawer 90 but also the porthole are openings in the system boundary of the housing 20. Furthermore, the known laundry treatment appliance has an inlet to a lint filter of a lye pump or other mechanism of the laundry treatment appliance. All these openings are closable and in case of emergency these openings are watertight barriers between the inner space of the laundry treating appliance 100 and the outside of the laundry treating appliance 100. However, if water (i.e. liquid) still flows out of at least one of the openings due to malfunction, wear and/or other reasons, the liquid 8 flows down the outside of the laundry treating appliance along the housing 20. Even if the liquid leakage occurs only in the form of droplets, a large amount of liquid 8 collects below the laundry treatment appliance 100. This liquid can cause damage to real estate and furniture. In this case, the externally present liquid cannot be detected by the measuring device 60 arranged inside the laundry treatment appliance. Thus, the operation of the laundry treating appliance 100 continues unknowingly and thus damage is increased.

Fig. 3 shows a schematic front view of a laundry treatment appliance 1 according to an embodiment of the present invention. The laundry treating appliance 1 should eliminate the above-mentioned disadvantages of the prior art. The laundry treatment device 1 of the present invention has the above-described features of known laundry treatment devices. In particular, the laundry treatment appliance 1 has a housing 2 which defines an inner space in its interior. In this inner space a measuring device 6 is arranged. The measuring device 6 is at the deepest point of the shoe in the closed shoe. The laundry treatment device 1 further includes a detergent drawer 9 and a porthole 10. The detergent drawer and the porthole form the transition of the system boundary between the outside and the inside of the housing 2. Furthermore, the laundry treatment appliance 1 has a control unit 7 which is designed to receive, process and output control signals. Furthermore, the laundry treatment appliance 1 has a shut-off device (not shown), which corresponds to the shut-off device 50 of the prior art and is arranged in the supply line 3 for water. In addition to the porthole and the laundry treatment agent drawer, the laundry treatment appliance 1 has further openings which are not shown in the figures.

In contrast to the prior art, the laundry treatment appliance 1 of this embodiment has two catch basins 11, which are each assigned to one opening. Thus, a catch basin 11 is assigned to the treating agent drawer 9 and a catch basin 11 is also assigned to the porthole 10. If the liquid 8 now leaks out of the treatment agent drawer 9 and/or the porthole 10, it is caught in the catch basin 11 and guided to the collection point 12. In the present embodiment, the liquid 8 is guided from the collection point 12 into the interior of the housing 2 and is conveyed there to the tray. As a result, the liquid level inside the housing 2 rises and lifts the float of the measuring device 6, which is designed as a float switch in the present exemplary embodiment. Then, a signal is sent to the control unit 7, which then controls the shut-off device in such a way that further water supply to the water-conducting household appliance 1 is interrupted. In all figures the signal path of the signal from the measuring device to the control unit 7 is schematically indicated by an arrow. In another embodiment, not shown, the control unit 7 sends an indication (e.g. an alarm) to the user, preferably by means of the internet, to the smart device. Preferably, the control unit sends a signal and shuts off the water supply.

In this way, in the present exemplary embodiment, water present outside the housing 2 is also detected and, based on the detection result, the shut-off device 5 is automatically actuated and/or a signal is output in order to prevent further water supply to the laundry treatment appliance 1.

Fig. 4 shows a schematic front view of a water-conducting household appliance 1 according to a further embodiment of the invention. The water-conducting household appliance 1 of this embodiment essentially corresponds to the water-conducting household appliance in fig. 3, with the difference that only one catch basin 11 is provided. The catch groove 11 in this embodiment extends over the entire width of the water-conducting household appliance 1 (i.e. over the entire width of the housing 2). The catch basin 11 is arranged below the lowermost opening in the vicinity of the base. It is thereby ensured that all liquid 8 flowing out of one of the openings is captured by the capture trough 11. If the liquid 8 flows out, it is captured by the capture trough 11 and conveyed to the collection point 12. From there, the liquid 8 is returned again to the interior of the housing 2, so that the measuring device 6 arranged in the housing 2 can detect the liquid 8.

Thus, existing containment systems can be upgraded to comprehensive containment systems by means of passive extensions. Since, in the event of unintentional leakage of liquid from the detergent drawer or the porthole, water adheres to the machine front and flows along the machine front to the real estate floor, a catch basin can be integrated in the region of the base of the machine front, which catch basin extends over the entire machine front. This can be implemented very aesthetically in terms of design. However, it is also possible to provide partial catch basins (see fig. 3), one in the region of the detergent drawer and one in the region of the porthole (see above). They can also be integrated unobtrusively into existing recesses on the front face of the appliance. Common to all capture troughs is: they can each be of inclined design and have an opening at their deepest point into the interior of the machine, specifically, for example, via a downcomer toward the bottom. The collected water activates the existing internal leak protection system.

In this embodiment, small amounts of liquid (for example, amounts of liquid which flow out when the laundry is removed from the washing drum) are not detected and thus no false alarm is triggered. A smaller amount of water evaporates in the catch basin and/or does not flow effectively into the laundry treatment appliance 1. Only a harmful amount of water leakage will be detected.

Fig. 5 shows a schematic front view of a water-conducting household appliance 1 according to a further embodiment of the invention. The water-conducting household appliance 1 of this embodiment corresponds essentially to the water-conducting household appliance of the above-described embodiment, with the difference that the measuring device has two conductivity sensors 6, of which one conductivity sensor is arranged in each case in one of the catch basins 11. More precisely, one collection gutter 11 is arranged below the treating agent drawer 9 and one collection gutter 11 is arranged below the porthole 10. In this case, each collection trough 11 has its own liquid sensor 6 assigned to it. The corresponding detection results of the liquid sensor 6 are supplied to the control unit 7. The control unit 7 can thus recognize: where the liquid 8 is flowing out. The control unit 7 may send this information to the user. In addition, this information can also be stored internally, so that it can be used later in the damage tracking to specifically remove the damage.

Fig. 6 shows a schematic view of another embodiment according to the present invention. The laundry treatment appliance 1 of this embodiment differs from the laundry treatment appliance 1 shown in fig. 5 in that a further conductivity sensor 6 is arranged below the housing 2. In particular, the conductivity sensor 6 has two electrodes which are in contact with the ground on which the laundry treatment appliance 1 is located. In this case, the electrode is pressed against the ground by a prestressing device in order to ensure a reliable contact between the electrode and the ground. As a result, the safety can be further increased in that even liquids which are not captured by the capture trough 11 and are detected by the measuring device 6 arranged there, but which otherwise reach the floor under the laundry treatment appliance 11, can be detected.

In a further embodiment, which is not shown, a wired conductivity sensor is arranged in the vicinity of the laundry treatment appliance 1 as part of the measuring device 6. The conductivity sensor (e.g. conductivity value sensor) can be connected to the control unit 7 by means of a cable or without a cable. In this way, it is also possible to detect liquid which flows out in front of the shut-off device and which flows or falls to the floor in the surroundings of the laundry treatment appliance 1. The conductivity sensor described can also be a battery-operated, autonomous liquid sensor, which can be supplied together with the laundry treatment appliance. It can be connected or connectable by radio to the laundry treatment appliance 1, so that the control unit 7 actively controls the shut-off device 5 on the basis of the detection result of the external conductivity sensor.

List of reference numerals

1. Water-guiding domestic appliance

2. Shell body

3. Water supply device

4. Processing chamber

5. Cut-off device

6. Measuring device

7. Control unit

8. Liquid, method for producing the same and use thereof

9. Treating agent drawer

10. Porthole

11. Catch groove

12. And collecting points.

Claims

1. A water guiding domestic appliance (1) comprising:

a housing (2) having a process chamber (4) accommodated therein;

a water supply device (3) designed to supply water to the treatment chamber (4);

a shut-off device (5) designed to shut off the water supply;

at least one measuring device (6) which is designed to detect a liquid outside the housing (2) and to output a signal; and

a control unit (7) which is designed to control the shut-off device (5) and/or to output a notification on the basis of the signal of the measuring device (6).

2. Water guiding domestic appliance (1) according to claim 1, wherein the measuring device (6) comprises at least one conductivity sensor.

3. Water guiding domestic appliance (1) according to one of the preceding claims,

wherein the housing (2) has at least one opening (9, 10); and is provided with

Wherein the measuring device (6) comprises at least one capture groove (11) arranged on the housing (2) such that liquid (8) flowing out of the at least one opening (9, 10) can be captured by the at least one capture groove (11).

4. Water guiding household appliance (1) according to claim 3,

wherein the at least one catch basin (11) is designed, in particular inclined, such that the caught liquid (8) can be conducted to a collection point (12); and is provided with

Wherein the measuring device (6) is designed to detect the liquid (8) at the collection point (12).

5. Water guiding domestic appliance (1) according to one of the preceding claims,

wherein at least two openings (9, 10) are provided on the housing (2) and a catch basin (11) is associated with each opening (9, 10), which have a collection point (12) associated with each catch basin (11) or a common collection point (12).

6. The water guiding household appliance (1) according to claim 4 or 5, wherein the at least one collection point (12) is arranged inside the housing (2).

7. Water guiding domestic appliance (1) according to one of the claims 4 to 6,

wherein the measuring device (6) comprises a liquid sensor, in particular a conductivity sensor;

wherein the liquid sensor is arranged at the at least one collection point (12) such that the liquid (8) at the at least one collection point (12) can be detected.

8. Water-conducting household appliance (1) according to any one of the preceding claims, wherein the measuring device (6) comprises a floor humidity sensor, in particular a conductivity sensor, wherein the floor humidity sensor is arranged below the housing (2) in an operating state of the water-conducting household appliance (1).

9. Water guiding domestic appliance (1) according to one of the preceding claims,

wherein the measuring device (6) comprises a humidity sensor which is designed as a conductivity sensor having at least two electrodes, wherein the electrodes have a distance of at least 3cm, preferably at least 2cm, from one another.

10. A method for controlling a water-conducting household appliance (1), wherein the method comprises the following steps:

-providing a water-guiding domestic appliance (1) according to any one of the preceding claims;

-detecting a liquid (8) outside the housing;

-controlling a shut-off device (5) so as to cut off the water supply to the water-conducting household appliance (1), and/or

-outputting a notification: a liquid (8) is present outside the housing (2).